RUNNER’S
“WELCOME TO ULTRA-TRAIL SNOWDONIA BY UTMB. IT’S GREAT TO HAVE YOU HERE AND READY TO TAKE ON UTS IN THE MOUNTAINS OF ERYRI.”
“Before anything else, make sure you are prepared. Take time to understand your route, your timings and the specific demands of your race. Conditions in Eryri can change quickly, and the terrain will test you throughout. Being ready is a key part of the experience.
You will soon discover what makes UTS unique. This is not a course that eases you in. The climbs are steep, the trails are technical and the mountains demand your full attention from start to finish. Whether you get clear views or low cloud, it’s an environment that leaves a lasting impression.
As you move through this landscape, remember that we are guests here. Eryri is a protected environment and home to both wildlife and local communities. Please stay on marked paths, carry all waste with you and treat the surroundings with respect so that others can enjoy it long into the future.
This event is only possible thanks to the people who call this area home. We are incredibly grateful to the landowners, local communities and businesses who support UTS and allow us access to these trails.
You will also be supported by an outstanding team of volunteers and crew across the course. They give their time and energy in all conditions to keep the event running safely and smoothly. A quick thank you as you pass goes a long way.
Above all, this is your challenge. Run your own race, look out for others and take in the experience as it unfolds around you.
We look forward to seeing you on the start line.”
JULES PIJOURLET EVENT DIRECTOR
“CROESO I ULTRA-TRAIL SNOWDONIA ERYRI BY UTMB.”
“Cyn cychwyn, gwnewch yn siŵr eich bod chi’n barod. Cymerwch amser i ddod i adnabod eich llwybr, eich amseriadau, a gofynion penodol eich ras. Gall y tywydd yn Eryri newid yn gyflym, a bydd y dirwedd yn eich profi drwy gydol y ras. Mae bod yn barod yn rhan allweddol o’r profiad.
Fe welwch chi’n fuan beth sy’n gwneud UTS yn unigryw. Nid cwrs sy’n dechrau’n raddol yw hwn. Mae’r dringo’n serth, y llwybrau’n dechnegol, ac mae’r mynyddoedd yn mynnu eich holl sylw o’r dechrau i’r diwedd.
P’un a gewch chi awyr glir neu gymylau isel, mae’n amgylchedd sy’n creu argraff ddofn. Wrth i chi symud ar hyd y dirwedd hon, cofiwch mai gwesteion yn unig ydyn ni yma. Mae Eryri yn amgylchedd gwarchodedig ac yn gartref i fywyd gwyllt a chymunedau lleol fel ei gilydd.
Arhoswch ar y llwybrau sydd wedi’u marcio, ewch â phob darn o wastraff gyda chi, a pharchwch y wlad o’ch cwmpas fel y gall eraill ei mwynhau ymhell i’r dyfodol.
Mae’r digwyddiad hwn ond yn bosibl diolch i’r bobl sy’n galw’r ardal hon yn gartref. Rydyn ni’n hynod ddiolchgar i’r perchnogion tir, y cymunedau a’r busnesau lleol sy’n cefnogi UTS ac yn caniatáu i ni ddefnyddio’r llwybrau hyn.
Cewch hefyd eich cefnogi gan dîm anhygoel o wirfoddolwyr a chriw ar hyd y cwrs.
Maen nhw’n rhoi eu hamser a’u hegni ym mhob tywydd i sicrhau bod y digwyddiad yn rhedeg yn llyfn ac yn ddiogel.
Mae dweud diolch cyflym wrth i chi basio yn mynd yn bell. Yn anad dim, dyma eich her chi. Rhedwch eich ras eich hun, gofalwch am eraill, a mwynhewch y profiad wrth iddo ddatblygu o’ch cwmpas.
Edrychwn ymlaen at eich gweld ar y llinell gychwyn.”
MAE’N WYCH EICH CAEL CHI YMA AC YN BAROD I YMGYMRYD AG UTS YM MYNYDDOEDD ERYRI.” JULES PIJOURLET
Y
MEET YOUR EXTRAORDINARY
Uniting trail runners, both elite and amateur alike, through the leading international events in the most stunning locations.
The UTMB® World Series gives all trail runners the chance to experience UTMB® adventure across the world, discovering cultures and sharing trails as they start their quest towards the UTMB® World Series Finals at the pinnacle HOKA UTMB® MontBlanc.
RUNNING STONES: BOOST YOUR CHANCES FOR THE UTMB WORLD SERIES FINALS
Earn Running Stones by completing races in the 20K, 50K, 100K, or 100M categories at any UTMB World Series Event or Major.
Running Stones are cumulative and never expire, so you can collect as many as you like over time.
You’ll need just 1 Running Stone from the past two years to qualify for the Finals lottery.
Each Running Stone gives you an extra chance to be selected in the lottery.
The mythic HOKA UTMB Mont-Blanc is the world’s most well-known and revered trail running event on the planet.
In the heart of the Alps, the prestigious UTMB World Series Finals are held in 3 categories: the OCC (50K), CCC® (100K) and UTMB® (100M) every year at the end of August in Chamonix, France.
Four UTMB World Series Majors, are held each year across the Americas, Europe, Asia-Pacific and Oceania regions.
Collect double the amount of Running Stones compared to other UTMB World Series Events for the UTMB World Series Finals lottery. In total, 210 runners are also granted automatic qualification for the UTMB World Series Finals through each Major. This includes age-group category winners and the top 10 male and female runners in the 100M, 100K and 50K categories.
Start your journey, gather your Running Stones, and unlock the path to the UTMB World Series Finals!
YOUR TRAIL RUNNING PASSPORT
The UTMB Index measures a runner’s performance across four race categories: 20K, 50K, 100K, and 100M , as well as an overall score.
IT’S ESSENTIAL FOR:
Entering the UTMB World Series Finals lottery (with at least 1 Running Stone).
Defining your start wave to ensure the best race experience.
Get the UTMB experience closer to home. Built on a passion for the mountains, with sustainability at its heart, UTMB World Series Events, gives all trail runners the chance to experience the UTMB adventure while showcasing the unique aspects that each race destination offers at over 50 Events around the world.
Exclusive Race Access: You benefit from a 48-hour priority registration to UTMB World Series Events. And for some 100K and 100M events require a valid UTMB Index for safety or lottery pre-registration.
HOW IT WORKS:
Your UTMB Index is based on your top 5 race results (weighted for recency and performance) over the last 36 months. At least 1 valid race result in the past 24 months is required for a valid UTMB Index.
With over 6,000 races worldwide they are plenty of opportunities to boost your UTMB Index.
Ready to level up your trail running? Validate or improve your UTMB Index today!
CHECK IT OUT AT UTMB.WORLD
Manage everything in one place:
- Track your Running Stones and UTMB® Index.
- View your race results and performance stats.
- Check upcoming race registrations.
- Share your achievements with friends.
EVENT SCHEDULE
PARKING
Parking in Llanberis is limited, especially during the busy event weekend, so all runners are strongly encouraged to plan ahead and use the official event parking. A Park & Ride system operates from designated car parks to the north of Llanberis and near Bangor, with regular shuttle buses taking you directly to the Ultra-Trail Village.
Car park passes must be booked in advance via your MyUTMB account and include shuttle access for the duration of your race weekend. Runners staying locally are encouraged to walk where possible, while car sharing is recommended to reduce congestion and environmental impact.
LLANBERIS
For safety reasons, you will not be permitted to sleep in your vehicle overnight.
Strict parking restrictions will be in place across Llanberis and surrounding areas for the duration of the event. Please follow all signage and guidance from event staff and local authorities, as illegal or unsafe parking may result in fines or towing.
PUBLIC TRANSPORT
We are running a shuttle service from Bangor train station to make travel to the Ultra-Trail Village straightforward. The shuttle service is subject to a fee and must be booked in advance via your MyUTMB account.
Wherever possible, consider walking if you are staying locally or car sharing to help reduce congestion and minimise environmental impact.
Latest information on parking, shuttle bus timetable and coach transfers can be found on the website HERE
AID STATION INFORMATION
WHAT’S AVAILABLE ALONG THE COURSE?
There are three types of aid station along the race routes. Please refer to each of the race route profiles on the Ultra Trail Snowdonia website for more information, including what type of aid station is at each location.
DRINKS ONLY
This is the first aid station on all routes and offers: drinking water, Näak Energy drink mix, orange squash and Coca-Cola.
FOOD & DRINK
In addition to the above drinks, these aid stations also offer: Hot drinks (tea, coffee, hot chocolate) and biscuits. Sandwiches (white bread, wholemeal bread, gluten free bread, cheese, pickle, peanut butter, raspberry jam), crisps, peanuts, fruit (bananas, oranges).
HOT FOOD
In addition to the above, these aid stations also offer: Capel Curig (100M) baked potato and toppings, Croesor (100K& 100M) vegetable chilli, Beddgelert (100M, 100K, 80K) pasta and sauce
Please note: these options are correct at the time of publication. All food options are subject to change.
SANITARY PRODUCTS FOR FEMALE PARTICIPANTS
Alongside general toilets, female only toilets are available at the start and finish of each race, plus all aid stations. We ask all participants to be respectful with these facilities and do not use them if they do not apply to you. Sanitary products are also available at aid stations (usually inside the female only toilets).
PERSONAL ASSISTANT ‘SUPPORT CREW’
UTS 100M / UTS 100K / UTS 80K
One personal assistant (also known as ‘support crew’) permitted for participants for the 100M, 100K + 80K races. They will be given a wristband. This wristband (which is interchangeable) allows their personal assistant access into the aid station with one bag of MAXIMUM 30 litre capacity.
NO SPECTATOR LOCATIONS
Due to the remote locations of some aid stations and narrow country lanes, we have been selective with which locations are suitable for spectators to gather at. The below locations are not suitable for spectators and must be turned away if they arrive.
Runners are responsible for their crew and spectators. Anyone at restricted aid stations will be asked to leave, and the runner may be penalised. Please respect these rules.
DROP BAG
UTS 100M / UTS 100K / UTS 80K
UTS 100M, 100K + 80K participants will receive a 30 litre UTMB World Series drop-bag (a branded drawstring bag) for personal items to transported to the below locations for each respective race.
UTS 100M PARTICIPANTS
Start › AS07 Croesor › Finish approx. 84 km into the race.
UTS 100K PARTICIPANTS
Start › AS07 Croesor › Finish approx. 53 km into the race.
UTS 80K PARTICIPANTS
Start › Finish
Y FRON
LLANBERIS PATH
PEN Y PASS
OGWEN VALLEY
LLYN EIGIAU
CAPEL CURIG
DOLYWYDDELAN
BLANAEU FFESTIONIOG
CROESOR
GWASTADDANAS
BEDDGELERT
RHYD DDU
BRON Y FEDW
BETWS GARMON
BRON Y FEDW
SPECTATOR ZONE
Need a fantastic spot to cheer your runner amidst the stunning scenery of Eryri (Snowdonia)? Then join us at Bron-y-Fedw Uchaf Farm – home to our spectator zone for our ultra-trail race distances!
Located on the A4085 between Betws Garmon and Rhyd Ddu, the farm offers a dedicated spectator zone where you can relax, refuel and roar your support at your favourite runners as they complete the descent from Yr Wyddfa, the highest point on the course. UTS 100M and UTS 50K routes pass this location with participants being able to stop at the aid station to replenish their food and drink supplies.
Remember: only personal assistants (‘support crew’) with a wristband can enter the aid station.
With ample car parking available, you can arrive with ease and find your spot near the marquee for a comfortable race viewing experience.
Bron-y-Fedw provide a brilliant vantage point to see your friends and family at this crucial part of their race, before they head into Beddgelert Forest and summit Mynydd Mawr and onwards to Betws Garmon.
OFFICIAL SPECTATOR ZONE a comfortable and safe area to watch the race.
FREE PARKING park with us and help keep the narrow roads of Eryri free from obstructions.
SCENIC VIEWS take in the breathtaking beauty of Eryri from beneath Yr Wyddfa.
IDEAL VANTAGE POINTS the perfect location to catch your runner at a key point in the race.
FOR EVERY MILESTONE
SUSTAINABLE HEAD & NECKWEAR DESIGNED FOR EVERY ADVENTURE
Open Ear Headphones
INCLUSIVITY
We believe a women’s place is on the start line and at Ultra-Trail Snowdonia by UTMB® we are actively including and encouraging greater female participation at the event. To promote greater equity and adaptability for women in trail running, the UTMB® World Series is implementing dedicated measures to ensure its races meet the specific needs of female athletes, offering services that facilitate their participation and enhance their experience in the sport.
FOR THIS PURPOSE, THE ORGANISATION OF ULTRA-TRAIL SNOWDONIA BY UTMB® IS FOLLOWING THE BELOW INITIATIVES AT THE EVENT:
We use inclusive imagery (men / women / under-represented groups) within our event day coverage and on our website and social media throughout the year.
There are female only toilets at the start, finish and at each aid station within our races. We provide female sanitary and period products at these toilets. Our volunteers are briefed that these toilets are only for women.
We acknowledge the importance of female safety and all our aid stations are staffed with a mixture of male and female volunteers.
Equal coverage and airtime is given to both the men’s and women’s races on social media on race day.
Our media staff are provided with gender and diversity guidance to a create wide selection of images.
Wave starts give better visibility of women at the front of our start lines as well as more room to race.
PATH TO PARENTHOOD
UTMB recognises that the journey to parenthood is unique and can impact training and racing in different ways. To better support women and families, the UTMB World Series has introduced policies that allow pregnant athletes, those with pregnant partners, or those adopting or using surrogacy to defer their race entries or receive refunds, with priority access to return in future years.
These initiatives are designed to remove barriers and encourage more women to stay involved in trail running before, during and after parenthood. By offering flexibility, understanding, and equal opportunities, UTMB aims to create a more inclusive environment where athletes can balance family life with their ambitions on the trails.
PERFORMANCE STARTS IN YOUR HEAD.
REUSE, REPAIR & RECYCLE
PAIR UPS
Pair Ups will be offering you the chance to repair your trainer uppers FREE OF CHARGE to all runners and supporters (while supplies last).
Head to the Pair Ups tent, leave your shoes and pick them up when they’re fixed on the Friday, Saturday or Sunday. If you’d like to leave them for longer, then all they ask for is just the return postage and packaging (P&P) to send them back to your home.
SNOWDONIA GEAR REPAIR
The Snowdonia Gear Repair team will be available for in-person-on-the-day repairs to all runners and supporters and will include repairs such as:
• Heat Patches - £18
• Zip Slider Replacements – From £18
• Hand Stitching – From £10
• Seam Taping (per ½ metre) – £20
Larger repair jobs are also available where items can be left and posted back. This includes repairs to waterproof jackets, insulated down jackets, running vests and backpacks.
THE SNOWDONIA SOCIETY
The Snowdonia Society / Cymdeithas Eryri plays a vital role in protecting and preserving the landscapes we’re privileged to run through. Their work helps keep Eryri’s paths, wildlife and environment in good condition for everyone. We encourage all runners to visit their stand in the Ultra-Trail Village to learn more about their impact and, if you can, support them with a donation.
TRASH FREE TRAILS EXIST TO PROTECT OUR TRAILS AND THE WILD PLACES THEY TAKE US TO.
I’m ‘just’ a runner, what can I do? Plenty!
Ultimately, the success of a ‘Trash Free Race’ will depend upon all individuals involved coming together to bring the event to life! Here’s what YOU can do to care for the trails at Ultra Trail Snowdonia:
Bring your own coffee cup or a cheeky postrace beer vessel of your choosing
Pick up 5 items of trash when you’re on the trails, or as much as you can fit in a pocket! Tell us what items you find quickly and easily here to contribute to our in field research.
TREES NOT TEES
After a successful collaboration in 2025, we’re proud to continue our partnership with Trees not Tees for the 2026 edition of Ultra-Trail Snowdonia by UTMB.
Over 500 of you have chosen to plant a tree instead of receiving a race tee, helping to restore UK woodlands and reducing waste. Visit their WEBSITE or social media to find out more.
SAFETY
ENVIRONMENT & WEATHER
Weather conditions in the UK can often change multiple times a day, with coastal and mountainous regions known for experiencing very quick alterations in temperature, wind speeds and visibility.
The Race Committee reserve the right to modify the routes, cut-off times, aid station locations or any other aspects of the event. This may be necessary in situations of adverse weather. Where possible, races will remain within the same UTMB race category to allocate the same number of Running Stones to finishers.
Therefore, it is essential you download the LiveTrail app to your mobile phone and your mobile phone number is correct on your MyUTMB profile. Please ensure you have allowed notifications to be received.
Advice on the course:
• If you can’t find the next waymarker, turn around to find the last marker.
• Stay on the paths
FOOD & HYDRATION
Fluid and food intake should be adapted to weather conditions and fortified with salt throughout the duration of the event. Maintain a good balance between slow and fast sugars.
FATIGUE & ATTENTION
Places are provided at aid station points to rest and sleep for a while. It is dangerous to sleep alone in the wild. Fatigue and lack of alertness can be the cause of an accident. Run below your capacity (especially in the first part) to save energy for difficult situations such as a sudden change of weather.
LIVETRAIL
The app is the main tool for ensuring your safety as well as providing you with valuable race information (real-time tracking of your race and that of your friends).
In case of an emergency, the application allows you to send directly to the organization an SOS via text message giving your GPS position. This helps you to save precious time. It does not however mean that you do not make a call to the Race HQ. It is mandatory to have a working and charged mobile telephone that works in the UK. Do not set your mobile phone to airplane mode under any circumstances, as we need to be able to contact you before, during and after the race. We strongly recommended installing and using the LiveTrail® application on smartphones, which is essential for your safety.
For runners who will spend more than 15 hours in the race, are advised to bring an external battery. Make sure that the emergency number you provide is the number of the person you want to be alerted in case of a problem. Very important: To improve your support, check that you have filled in your phone number in your account during the race. You can update it right up to the start of your Race.
UTS 100M
Starting on Friday, UTS 100M is the ultimate grand-tour of Eryri (Snowdonia). It really is: ‘Beautiful beyond belief. Savage beyond reason’.
THE RACE
Starting Starting on Friday, UTS 100M is the ultimate grand tour of Eryri (Snowdonia), taking runners deep into the wild, rugged heart of the national park.
Beginning and ending in Llanberis, the route traverses technical trails, exposed ridges, glacial valleys and iconic peaks, offering a fully immersive journey through some of the UK’s most dramatic and untamed mountain scenery.
START ADDRESS: Llanberis, Caernarfon LL55 4TY
BIB COLLECTION: Friday 15 May 08:00 - 13:00
DROP BAG: AS07 Croesor approx. 84 km into the race.
PRIZE CEREMONY: Sunday 17 May 14:30
TIME CHARTS
UTS 100K
Starting on Saturday morning, UTS 100K covers the highlights of the mountainous areas of northern Eryri (Snowdonia), taking in countless stunning trails, technical ridges and epic views.
Starting early on Saturday morning, the UTS 100K takes runners deep into the mountainous heart of Northern Eryri (Snowdonia).
The route covers some of Wales’ highest peaks, blending technical trails, rugged ridgelines and sweeping valleys with epic views across the full 100km.
A true mountain ultra, it’s designed to test endurance, skill and resilience at every step.
INFORMATION
START ADDRESS: Llanberis, Caernarfon LL55 4TY
BIB COLLECTION: Friday 15 May
08:00 - 13:00 + 14:30 - 16:00
DROP BAG: AS07 Croesor approx. 53 km into the race.
PRIZE CEREMONY: Sunday 17 May 14:30
UTS 80K
Go from sea to mountains in this unique trail race ending in Eryri (Snowdonia) National Park.
TIME CHARTS UTS 80K
RACE
THE RACE
Starting on Friday evening, the UTS 80K takes runners on a unique journey from the coast into the mountains of Northern Eryri (Snowdonia).
Beginning at sea level in Caernarfon, the route links coastal paths, remote trails and rugged mountain terrain as it builds into the heart of Eryri.
A true sea-to-summit ultra, it blends runnable sections with demanding climbs, testing endurance, pacing and resilience through changing landscapes over 80km.
INFORMATION
START ADDRESS: Caernarfon LL55 2AY
BIB COLLECTION: Friday 15 May
08:00 - 13:00 + 14:30 - 16:00
DROP BAG: Finish Line
PRIZE CEREMONY: Saturday 16 May 17:00
SHUTTLE:
A free shuttle service will be provided by the organisation for runners, supporters, and spectators, operating from Llanberis to the start of the 80K race. No reservation is required. Departures will take place on Friday the 15th between 6:30 PM and 7:00 PM.
MAP
Caernarfon
UTS 50K
UTS 50K acts as the perfect stepping stone into Alpine-scale mountain ultrarunning, taking in several technical mountain trails around the Snowdon massif.
UTS 50K is the perfect introduction to Alpine-scale mountain ultra-trail running, set deep in the heart of Eryri (Snowdonia).
Starting in Llanberis, the route takes on the ascent of Yr Wyddfa (Snowdon), the highest peak in Wales, before weaving through the rugged and technical trails of the Snowdon Massif.
Blending steep climbs, rocky terrain and flowing sections, it delivers a demanding yet accessible mountain ultra across 56km of spectacular landscape.
15 May 16:00 - 22:00
ERYRI 25K
The ERYRI 25K is inspired by Eryri (pronounced Eh-ruh-ree) itself: the ‘land of the eagles’, that once soared freely, above the snow-capped peaks of this mythical land.
THE RACE
The ERYRI 25K is a fitting finale to the weekend, inspired by the wild highlands of Eryri (Snowdonia).
Starting on Sunday morning, the route explores scenic mountain trails and rugged terrain, offering a taste of the landscapes that define this iconic national park.
Shorter in distance but rich in character, it delivers an unforgettable trail experience to close out the event.
INFORMATION
START ADDRESS: Llanberis, Caernarfon LL55 4TY
BIB COLLECTION: Saturday 16 May 16:00 - 22:00 PRIZE
Sunday 17 May 14:30
YOUR MANDATORY KIT LIST HERE
RAS FACH
Y PLANT ERYRI
DYDD GWENER, 15 MAI 2026 AM 18:00
Cylchdaith 2km llawn hwyl, sy’n rhad ac am ddim, o amgylch Parc Gwledig Padarn yn Llanberis cyn croesi llinell derfyn eiconig Ultra-Trail Snowdonia by UTMB!
ERYRI MINI KIDS’ RACE
FRIDAY 15 MAY 2026 AT 18:00
A free and fun 2km loop around Padarn Country Park in Llanberis before crossing the iconic Ultra-Trail Snowdonia by UTMB finish line!
RACE RULES & ENVIRONMENT
RACE BIBS
Bib pick up slots must be booked on your MyUTMB account. Race bibs are given to each participant once we have confirmed your race entry (ID check) and you have successfully presented all your mandatory kit to be checked. No mandatory kit = no race bib.
The race bib must be worn on the chest or stomach and must remain permanently and completely visible during the whole race. The race bib must be always placed on top of all clothing and must not be placed on the leg or race pack. We recommend using a race belt for ease of race bib position.
The participant’s name and partner logos must not be altered or hidden. The race bib is your access to the race start, aid stations, medical points, showers, drop bag collection, and DNF repatriation service.
Your wave is based on your UTMB Index and will be shown on your bib. Requests to move up waves are not allowed and anyone who does so will be penalised
100M : 1 WAVE ‒ 14:00
100K : 1 WAVE ‒ 05:30
80K : 2 WAVES ‒ 19:30 / 19:45
50K : 3 WAVES ‒ 08:30 / 08:45 / 09:00
MANDATORY KIT
Each participant must carry with them all the items listed in the mandatory kit checklist from the website and take all the clothing and equipment with them during the race.
There will be randomised checks at the start line. A penalty up to disqualification will be applied to participants who do not have any of the individual mandatory kit items with them when inspected.
Due to the long duration of the event, participants should ensure their electronic devices last throughout by planning for sufficient battery life, such as using charge-on-the-go options or carrying spare batteries.
LEFT LUGGAGE AT FINISH
The bag drop marquee will accept one small bag per runner (max 30 litres) for all runners to leave at the finish for collection post race. Please write your number on the bag tag provided. Bags must be handed in before travelling on the coach transfers. Suitcases, holdalls or tents will not be accepted.
WITHDRAWING FROM THE RACE
If you leave the race, please call the command centre or alert the captain of the aid station that you are withdrawing from the race. You can also use Live trail app to declare your withdrawal.
Be careful that your withdrawal is registered, if you do not do so and we launch the safety procedure, you will be charged a fee.
If you withdraw, you can be transported back to the main venue and the Eco Park. Please ask the aid station captain or the command centre.
WAYMARKING
UTS is a waymarked course. All race routes will be identified by a series of small, high-visibility, waymarkers along the course for you to follow. These are either flags placed into the ground, yellow streamers attached to tree branches or rocks, or plastic directional arrows on gates, stiles or signposts.
Waymarkers are made from high contrast red and white fabric. They include reflective material to ensure they are visible at night and reflect your headtorch light. To protect the environment we do not use paint on the trails.
CUT-OFF TIMES
Cut-off times are calculated to allow participants to reach the finish in the maximum amount of time allowed and are indicated on the course profile and course information on the website.
The cut-off time indicated for an aid station is the latest time a participant must leave the venue. Anyone who has not left an aid station by this time will be withdrawn from the race immediately.
POLES
If you choose to take poles, they must be carried for the duration of the race. If you decide to use poles, it is forbidden to start without poles and then collect them during the race. No poles are allowed to be stored in the drop-bags.
The use of poles will be forbidden in certain zones along the route marked by specific signs, for noise, safety or environmental reasons.
MEDICAL
Mountain Safety Team and Medical Team staff are positioned at specific locations along each course. They are able to respond to serious medical concerns or emergencies should any of our participants get into severe difficulty and need assistance quickly.
Please remember: it is a participant’s responsibility to manage physical problems arising from muscle or articular pains, small wounds, etc.
If a participant is in distress, or becomes seriously hurt, they should alert the organisers as follows:
1. Tell the Medical Team at the next aid station.
2. Tell the Mountain Safety Team on the course.
3. Call the emergency phone (number on race bib) +44 (0)1615 530 664.
If a participant is unable to move, and cannot call Event Control by using their mobile phone, they should:
1. Press the SOS button on their GPS tracker (UTS 100M, UTS 100K and UTS 80K only).
2. Use their headtorch and whistle to attract attention from another participant.
A participant must give help to any person they see in danger and alert the organisers as soon as possible.
IT IS MANDATORY NOT TO LEAVE A PERSON IN DIFFICULTY ALONE
REDUCED PLASTIC AT AID STATIONS
To reduce unnecessary plastic waste there will be no single use plastic (such as cutlery, cups or bowls) available at aid stations. You need to bring your own utensils if you wish to eat hot meals or drinks at the aid stations.
Littering is strictly forbidden. Participants must keep rubbish and wrappers (including gels, plastics, paper and organic waste) until they can deposit them responsibly in the bin at an aid station. Participants will be issued with a small, reusable waste bag at registration to store all your waste items while on the trails.
Please separate your rubbish at the aid stations so we can ensure the correct items are recycled. Organic waste such as leftover bars, fruit skins etc. should be disposed in the appropriate bins.
Used singular batteries can be deposited at an aid station and we will recycle these for you.
RESPECT FOR THE NATURAL PROTECTED AREAS
LIVESTOCK AND ANIMALS
You are recommended to stay as far away from livestock as possible while passing through farmland. Do not interfere with, or attempt to touch, sheep, lambs or cattle. If you see livestock in distress do not approach them but please report to the next aid station.
TOILET USE
Toilets are provided for you at all aid stations on the course, and at the race start and finish. We recommend you plan your toilet stops in advance to prevent needing the toilet while on the trail. If you have to go, all your waste must be collected and disposed of properly.
STAY ON WAYMARKED PATHS
We are privileged to run through stunning yet sensitive National Nature Reserves. These will be signposted at the entry and exit. You must follow the waymarking accurately to prevent damage to the flora and fauna. You must remain on the chosen path. Do not take short cuts.
GATES, FENCES AND STILES
You must close all gates, even if another participant is approaching behind you. It is vital gates are closed to protect livestock from mixing. This is a serious and important aspect of farming life in Eryri. If in doubt, please close the gate. You will be penalised if caught leaving a gate open.
BIOSECURITY IN THE FORESTS
Trees and plants in Britain are increasingly at risk from new pests and diseases due to climate change and global travel. Forests in Eryri (Snowdonia) are especially vulnerable, so your help is essential. To prevent the spread of disease, arrive in Llanberis with clean footwear, clothing, and poles, ensuring all mud and dirt from previous runs are thoroughly removed.
RESIDENTIAL AREA QUIET ZONES
UTS 100M, UTS 100K and UTS 80K participants pass through villages at night, so keep noise to a minimum to avoid disturbing residents and animals. In residential areas, do not use walking poles on hard ground and avoid shining headtorches into homes.
SHARING THE TRAILS
During Ultra-Trail Snowdonia, Eryri’s trails are shared with many visitors, so participants must always be respectful and aware of others. Runners do not have priority and should give way to walkers, especially families, slowing or stopping when needed and communicating when passing. Always follow instructions from volunteers and emergency services, and act with courtesy to ensure a safe and enjoyable experience for everyone.
Set in the centre of Llanberis, the Ultra-Trail Village is the beating heart of the Ultra-Trail Snowdonia by UTMB weekend. We welcome runners, supporters, friends and family to soak up the atmosphere in this lively space, built around the iconic start and finish line. It is a place to connect with the trail-running community, meet our World Series partners, chat with leading brands, try out products, join in community runs, and enjoy a taste of the local food scene, all in one dynamic outdoor setting.
Throughout the weekend, you will also find inspiring community initiatives, including Snowdonia Gear Repair, Pair Ups, and Trash Free Trails, who will have a dedicated stand where you can chat all things trail care, sustainability, and positive trail action.
The Ultra-Trail Village is more than just an event hub. It is the ideal spot to refuel, recover, and reflect after your run. Share stories with fellow runners, celebrate your achievements, and enjoy great local food while supporting nearby businesses.
08:00 - 20:00 FRIDAY 15/05
08:00 - 20:00 SATURDAY 16/05
08:00 - 15:00 SUNDAY 17/05 15-17 MAY 2026
FEATURES INCLUDE:
REGISTRATION MARQUEE FOR YOUR MANDATORY KIT CHECK AND RACE BIB COLLECTION
UTMB WORLD SERIES OFFICIAL MERCHANDISE
UTMB WORLD SERIES PARTNERS
RUNNING AND LIFESTYLE EXHIBITORS
SUSTAINABILITY STANDS TO REPAIR YOUR KIT TO LAST A BIT LONGER
LOCAL FOOD AND DRINK VENDORS
ULTRA-TRAIL VILLAGE EXHIBITORS:
ALTRA
TRAIL RUNNING FOOTWEAR DESIGNED FOR COMFORT, GRIP AND NATURAL MOVEMENT
CRIB GOCH OUTDOOR
GUIDED MOUNTAIN EXPERIENCES AND SKILLS IN ERYRI
FENIX LIGHTS
HIGH-PERFORMANCE HEADTORCHES AND OUTDOOR LIGHTING
LEKI
TECHNICAL TREKKING AND TRAIL RUNNING POLES
MAURTEN
ADVANCED SPORTS NUTRITION AND ENERGY FUELING SOLUTIONS
TRASH FREE TRAILS
(RE)CONNECT PEOPLE WITH NATURE THROUGH THE SIMPLE ACT OF REMOVING SINGLE-USE POLLUTION FROM WILD PLACES
NITECORE
LIGHTWEIGHT HEADLAMPS AND PORTABLE POWER SOLUTIONS
OMAN BY UTMB
DESTINATION RACE EXPERIENCE IN THE GLOBAL UTMB WORLD SERIES
PAIR UPS
TRAIL RUNNING SOCKS DESIGNED FOR PERFORMANCE AND DURABILITY
PEN WIWAR
HANDMADE WELSH KNITWEAR AND OUTDOOR ACCESSORIES
SNOWDONIA GEAR REPAIR
SPECIALIST REPAIR SERVICE FOR OUTDOOR EQUIPMENT
SUMS
SUSTAINABLE TRAIL RUNNING APPAREL MADE FROM RECYCLED MATERIALS
THE NORTH FACE
TECHNICAL OUTDOOR CLOTHING AND EQUIPMENT FOR MOUNTAIN PERFORMANCE
TORQ
ENDURANCE NUTRITION FOR TRAINING AND RACING
TRAIL SKIN
PREMIUM TRAIL RUNNING APPAREL DESIGNED FOR COMFORT AND PERFORMANCE
ULTRA-TRAIL VILLAGE CATERING AND DRINKS VENDORS:
BURGER BAY
LOCAL WELSH BEEF AND LAMB BURGERS
COFFEE BAY
LOCAL COFFEES AND HOT DRINKS
GEORGIO’S
PASTA, HOMEMADE ICE CREAMS AND DESSERTS (V) & (VE) & (GF)
PIZZA LLUN
DELICIOUS PIZZAS (V)
SWIG SMOOTHIES
TASTY, HEALTHY AND NUTRITIOUS SMOOTHIES
DRAGON ROASTERY
LOCAL COFFEES AND HOT DRINKS
SNAC HAPUS
STREET FOOD, DRINKS & COFFEE
UTMB WOLD SERIES PARTNERS:
THEY LOOKED AFTER MY FAMILY AND FRIENDS WHILE I WAS ON THE MOUNTAIN
HAVING A DEDICATED ATHLETE MANAGER IN RESORT MEANT EVERYTHING WAS HANDLED
THEY PLANTED A TREE ON MY BEHALF
HOTEL WAS IN A GREAT LOCATION, PERFECTFOR ALL THE RACE WEEK ACTION!
ONLY ONE BOOKING TO MANAGE FOR ALL MY FLIGHTS, HOTEL AND TRANSFERS – A HUGE RELIEF!
