Start & Finish Venue

Cae Llan/Village Green, Station Road, Betws-Y-Coed, LL24 0AE

Pre-Race Registration – Friday 5th September 2025

5.30pm – 9.00pm Race Registration – Bib Number Collection Only

Race Day – Saturday 6th September 2025

4.15am – 5.30am GB Race Tracker Collection, Bib Number Collection & Drop-bag Dropoff
6.00am – Race Start 100 Mile Snowdon Ultra 

Please car share wherever possible to minimise the carbon footprint as much as possible. ‘Long Stay’ 24 hour Pay & Display parking is available for just £6 at Betws-y-Coed (Card payment is available but please bring the correct change in case there is a fault with the pay and display, as it’s very unlikely you’ll find anything open so early on Race day).

Where support crews are permitted at checkpoints, parking is chargeable – please ensure you bring change to pay for your parking as some machines only take cash

Yr Wyddfa Snowdon Ultra 100 mile has 10 Checkpoints en route maintaining a high level of support.

Each of the checkpoints have refreshments including cola, tailwind, water and juice as well as a variety of sandwiches, salted potatoes, fruit, snacks, crisps and chocolate. Vegetarian and vegan refreshments will be available. At indoor checkpoints, hot food such as pasta, beans on toast will be available along with hot drinks. We’ll also have a Medic, First Responder or a First Aider available at each CP.

There are strictly enforced cut-off times per Checkpoint implemented by the Event Organisers, GB Ultras, to ensure a safe event.

Checkpoint distances are approximate and may vary each year should there be minor diversions on the route (due to local authority/landowner works).  You must enter the checkpoint before the cut off time to proceed further in the event.  Should you pass through the Checkpoint in time, you may stay at the relevant checkpoint for no more than 20 minutes after the cut off.

Participants must attend ALL checkpoints and have their details recorded by the Checkpoint teams.

Failure to check-in at a Checkpoint will result in your disqualification from the race.

The locations of the Checkpoints for this event are:

Checkpoint 1: 8.4 Miles

SH68510 60202 Gwern Gof Isaf, LL24 0EU
Cut off 09:51 Saturday
SUPPORT CREWS NOT PERMITTED

Checkpoint 2: 13 Miles

Field opposite Pen-y-Gwyrd hotel, Nant Gwynant, LL55 4NT.
Cut off 11:58 Saturday
Support Crews Permitted – Limited parking available in the lay-bys on the road close to the checkpoint. DO NOT PARK IN THE BUS TURNING AREA.

Checkpoint 3: 23 Miles

Field opposite Pen-y-Gwyrd hotel, Nant Gwynant, LL55 4NT (after summitting Yr Wyddfa).
Cut off 17:11 Saturday
Support Crews Permitted – Limited parking available in the lay-bys on the road close to the checkpoint. DO NOT PARK IN THE BUS TURNING AREA.

Checkpoint 4: 28 Miles

SH64968 60372 Pont Pen-y-Benglog, LL57 3LZ
Cut off 20:15 Saturday
Support Crews Permitted

Checkpoint 5: 38 Miles

SH75665 61843 Llyn Crafnant Car Park, approx. LL27 0YX/LL27 0JZ
Cut off 23:54 Saturday
Support Crews Permitted

Checkpoint 6: 45 Miles

Mandatory kit MUST be carried AT ALL TIMES during the race.

Failure to carry mandatory kit will result in a participant being disqualified.

Random kit checks at race registration, during the race and at the finish line will take place.

Snowdon Ultra Mandatory Kit

Hardcopy Map: Ordnance Survey (OS Explorer): Map OL17 Snowdon/Yr Wyddfa & OL18 Harlech, Porthmadog & Y Bala or Harveys Map XT25 Snowdonia North (please note the OS version has greater detail but is more bulky).
Waterproof coat with sealed seams, i.e. Goretex – Min 10,000mm
Base Plate Compass
2 x Base layer long sleeved (1 x Must be separate from Start Kit in a dry bag)
Water bottle or bladder -min 1 litre capacity,
Fully charged mobile phone (in clear waterproof bag),
Survival/thermal bag or Bivi bag (Foil Blanket not sufficient),
Headtorch – Min 75 Lumens,
Emergency Rations – Min 500 Calories,
Whistle,
Backup Light source – Min 25 Lumens (Not your phone),
GPS Tracker (provided by GB Race Tracker at Race Registration beside the Start line prior to the Race).
Waterproof trousers
Gloves
Warm hat

Recommended Kit
First Aid Kit
GPS Watch/Personal GPS handheld device
Mountain/Trekking Poles
Cup for hot drinks at indoor checkpoints

Please be aware GB Ultras Races Now Cupless! You can buy a GB Ultras reusable cup CLICK HERE to visit the shop.

GB Ultras Merchandise

We’ll have a range of our GB Ultras branded merchandise available at both race registration and at the finish.

• Drybags
• Enamel cups
• Hoodies
• Running vests
• Soft cups
• Technical t-shirts
• Visors

Optional Finisher T-shirt 

If you’ve pre-ordered your optional finisher t-shirt, you’ll be able to collect this during race registration on either day, or after you finish the race.  To make sure yours is waiting for you to collect, you can order it here if didn’t order one when you entered the race.

Availability is limited and finisher t-shirts won’t be available on the day to purchase!

Runners can utilise a Dropbag facility to transport a change of kit/supplies to two points during the race.

Dropbags will be transported to dedicated checkpoints, CP6 (Betws-y=Coed) and CP9 (Beddgelert).  These should be different dropbags.  Please do not leave valuables.

As an example, a Dropbag may contain a change of clothes, etc to meet you at the finish venue.  Any dropbag should be clearly labelled with the participant’s Surname & Race number at Registration. Labels will be provided at Race Registration on race morning.

Dropbags must be no larger than 50L.  Bags larger than this size will be refused.

GB Ultras recommend participants use a medium size pack a similar size to a cabin case, approx capacity 37 litres (55cm x 39cm x 20cm). Alternatively, you can purchase one of our drybags from our online store here: Large Dry-bag

Dropbags can be left at race registration ON RACE DAY ONLY.

Dropbags can be left between 4:15am and 5:30am with the Event Team in a designated area.

Support crews are more than welcome to pick up dropbags providing prior authorisation is given by the runner (at Race Registration) and early collection by the runner is fine too.  Please note dropbags at checkpoints at different locations during the race will only make their way to the finish venue when the checkpoint in question closes.

In the event that you withdraw from the race before reaching the finish, you must collect your dropbag from the finish venue.  Dropbags will not be transport to locations along the route.  Any dropbags not collected from the finish line will be disposed of after the event.  We are not able to post out dropbags that are not collected.

Dropbag 1: CP6
SH79450 56498 Betws-y-Coed Village Green – Cae Llan, Station Road, Betws-Y-Coed, LL24 0AE.

Dropbag 2: CP9
SH58781 48129. Beddgelert Community Hall – A4085, Aberglaslyn Hall, Beddgelert, Gwynedd, LL55 4UY.

A single pacer/ support runner is permitted from the halfway point of the race at Checkpoint 6.

Only one pacer is permitted to join the participant at anyone time and the pacer must not carry any of the runners mandatory kit. A pacer must be on foot.

Pacers must be self-sufficient throughout the time they are supporting the participant and will not be able to make use of any of the checkpoint provisions. Pacers must not enter the checkpoint locations except to use toilet facilities.

Pacers MUST carry all items listed in the Mandatory Kit list. Pacers will be subject to random kit checks and if found not carrying all items in the Mandatory Kit list, they not be permitted to continue.

The results will be available real-time during the event and we’ll update this page with the link prior to the event.

As each runner crosses the finish line, their race chip records their individual finishing position and finishing time.

Your position and time shown in the results link is your official result. Please note that the tracking system is different to the timing system and has no bearing on your chip time or result.

We’ll be posting the links to the official media team photographs here after the race has finished.  Please keep checking back to find yours.

Processing and editing the photographs does take some time so please allow 48-72 after conclusion of the race for the links to be added.

We’ll also be adding photographs taken by the event team on our Ultra Scotland Facebook page and in the GB Ultras Community Facebook Group as well!

2024 Event Photographs

Snowdon Ultra 100 Admission Waiver

Each ultra runner agrees and understands the full nature of an Ultra-Marathon. That an Ultra-Marathon involves running throughout the day and well into the night at times with limited rest over challenging terrain with inherent risks of changing weather conditions. Each ultra runner understands that it is their responsibility to adequately train for the event, and monitor their own health throughout and are ultimately responsible for their own safety. Criteria ensures that a runners safety depends on their own skills and abilities and these have been gained from other events placing them in good stead to take on the mental and physical challenges of Snowdon Ultra.

Each ultra runner understands these are their responsibilities not those of GB Ultras.

Please read these terms and conditions carefully and make sure that you understand them, before placing an entry on our site. By submitting your entry form, you agree to be bound by these terms and conditions (“the Terms”), and by submitting, you declare that you hereby, for yourself, your heirs and executors, administrators, successors, and assigns, declare that:-

1. I hereby agree to comply with the Conditions of Entry and all event rules and regulations as set down by GB Ultras Ltd (“the Event Organisers”) a company registered in England and Wales under company number 09397186. These conditions include the length of time taken to complete sections of the course which may be implemented by the Event Organisers, at their discretion, to ensure safe and proper running of the event.
2. I agree that the decision of the Race Referee will be final in all circumstances and no discussion will be entered into.
3. I agree to conduct myself in a sporting, professional and cautious manner during my participation in the event and understand that I may be disqualified if I do not do so.
4. I understand participation in this Event is physically strenuous and demanding and am fully aware of the nature of the event and all associated medical and physical risks involved. I further certify that I am physically capable of competing in this Event and I will only compete if I am fit enough to do so.
5. I will be immediately disqualified from the Event if I am found to have intentionally shortened the route to the race, and found to be deliberately littering the course.
6. If I have any medical condition(s), including allergies, which the Event Organisers or Event medical advisors might need to be aware of, I have provided details of this on my entry form, and will also provide written details of this on the rear of my pin-on numbers prior to my participation in the Event. I agree to display my number at all times during the Event.
7. I acknowledge that my pin-on number is personal to me and it is non-transferable under any circumstances.
8. I understand and agree that I participate in this Event entirely at my own risk, that I must rely on my own ability in dealing with all hazards, and that I must conduct myself in a manner that is safe for myself and all others throughout the duration of this Event.
9. I agree to retire immediately from the event if ordered to do so by the Event Organisers, any government official or member of the emergency services.
10. I accept full liability for any medical expenses incurred as a result of training for and/or participating in the Event
11. I accept that the Event Organisers, sponsors, race officials, medical advisers and any person involved in the organisation of this Event are not liable for any injury or illness or resultant death that I may suffer as a result of my participation in the Event, whether prior to, during or subsequent to the Event. I enter the race entirely at my own risk. I renounce any rights and claims for damages that I may have against the Event Organisers, sponsors, race officials, medical advisers and any person involved in the organisation of this Event together with their officers, directors, shareholders, successors and assigns, (collectively, “Releasees”) and release them from all liability to the Participant and his/her personal representatives, assigns, heirs, executors, and successors for loss(es), damage(s) and claims therefor on account of injury to Participant or his/her property or the resultant death of Participant, whether caused by the active or passive negligence of the Releasees or otherwise, in connection with Participants involvement in the Event (“Losses”), and further covenants not to sue any of the aforementioned parties for such Losses.
12. Whilst the Event Organisers take every care with the staging of the Event, I accept that I must make all reasonable precautions for the safeguarding of my person and of my property during my participation in this Event. I further acknowledge that personal accident and personal items insurance is my responsibility.
13. I understand that at registration, I must produce photographic identification.
14. I am aware that when running, the function of the marshals is only to indicate direction and that I must decide if the movement is safe.
15. I accept that, in relation to my participation in this Event, I am required to obey instructions from marshals and relevant signage before, during and after the Event.
16. The Event Organisers introduce cut off times for completion of sections of the course as they see fit. These will be made clear prior to the race. Competitors may be instructed to withdraw from the Event in accordance with the imposed cut off times.
17. I accept that the Event Organisers reserve the right to amend the event format or cancel the Event due to health and safety reasons, including storm, rain, inclement weather, winds or any other act of god conditions. I accept that my Entry fee shall be non-refundable in this circumstance as costs have already been incurred.
18. I accept that the Event Organisers will do their utmost to provide me with a finish time following my completion of the Event, however they will not be held responsible for any computer result anomalies.
19. I will be 20 years old or over on the day of the Event (Rule T3 (141) S5 UKA Trail Running).
20. I have read, understood and accept the GB Ultras Ltd Withdrawal Policy.
21. I understand that confirmed entry to this event is dependent on a fully and accurately completed online Entry Form; and receipt of payment to cover my Entry fee at least 10 working days (2 weeks) in advance of the event. If either of these conditions is not fulfilled then my entry will not be valid nor accepted, and I will not be eligible to take part in the Event.
22. Through my completion and submission of the online Entry Form, I am committing to paying for my Event entry via the means as instructed on the GB Ultras Ltd website.
23. I irrevocably consent to my appearance in any media format, in relation to the publicity of this Event, and in future publicity and advertising of GB Ultras Ltd; provided that such use does not imply my direct endorsement of any official sponsor or suppliers of the Event.
24. All decisions and rulings by the Event Organisers, its employees and its agents are considered final.
25. The Event Organisers reserve the right to vary these conditions by giving notice to in writing in any official event material or correspondence prior to the Event.
26. A person who is not party to these Terms shall not have any rights under or in connection with them under the Contracts (Rights of Third Parties) Act 1999.
27. We will not be liable or responsible for any failure to perform, or delay in performance of, any of our obligations under the Terms that is caused by events outside our reasonable control (Force Majeure Event).
A Force Majeure Event includes any act, event, non-happening, omission or accident beyond our reasonable control and includes in particular (without limitation) the following: strikes, lock-outs or other industrial action; civil commotion, riot, invasion, terrorist attack or threat of terrorist attack, war (whether declared or not) or threat or preparation for war; fire, explosion, storm, flood, earthquake, subsidence, epidemic or other natural disaster; impossibility of the use of railways, shipping, aircraft, motor transport or other means of public or private transport; impossibility of the use of public or private telecommunications networks; the acts, decrees, legislation, regulations or restrictions of any government; and pandemic or epidemic.

28. You agree that we may publish your Personal Information as part of the results of the Event and may pass such information to the governing body or any affiliated organisation for the purpose of insurance, licences or for publishing results either for the event alone or combined with or compared to other events. Results may include (but not be limited to) name, any club affiliation, race times, occupation and age category. You consent that your details maybe passed onto GB Race Tracker Ltd and Race Tracker AS to ensure the smooth and accurate running of the Tracking software. Your details may also be passed onto 3rd parties via Live tracking so that your family and friends and the general public can follow every entrants position during the Race.

29. Should a GPS Tracker be damaged, lost or stolen then the entrant agrees to cover the cost of the tracker which is £150 + VAT per GPS tracker.

30. Upon withdrawal or completion of the Race, the runner agrees to return the GPS tracker to the Race Organiser. If a GPS tracker is not returned to a dedicated Race Marshal at Race HQ then the runner will be charged £150 + VAT.

31.  I have read, understood and accept the GB Ultras Ltd Withdrawal Policy.

Extreme care should taken especially at heights where a fall can be serious.  Llanberis Search & Rescue along with Ogwen Valley Mountain Rescue will be informed of the event. We’ll also have our own medical teams at checkpoints too (Tactical Medical Rescue). The weather and the amount of miles covered in daylight hours will undoubtedly contribute to the possible dangers encountered during the race so the mandatory kit must be carried throughout the event.

Checkpoints are approximately every 6 – 10 mile so the team will be there to support your race as much as we can.

Should you arrive on the Friday evening prior to the race as opposed to the Saturday morning of the Race we will be on hand to help with any questions. We will also be organising recce runs ahead of race day covering key sections of the route – details of these are further down the page.  A Mandatory Kit Brief and Race Brief is available to watch further down on this page.

Although largely a mountainous route, due to the nature of the event, there are inevitably some road crossings too where it will be necessary to slow and possibly stop as no roads are closed en route for the race itself.

As always, if you see a runner experiencing difficulties please inform Checkpoint Marshals. Each runner should have the Race HQ mobile number. Our team will always endeavour to reach any participant in difficulty but due to inaccessibility of the trail this can take time. Participants who lose time helping another fallen participant, struggling against the cut off time due to this reason, can claim this time back, subject to RD discretion and under the proviso of completing within their new, extended cut off period and providing support is available from our venues, medical team and event team.

In the mountains, the weather can change very quickly so the mandatory kit is essential for good reason. Depending on conditions closer to race day, additional kit may well be required too. Spot checks will be done on race day and any runner without the mandatory kit may be disqualified or time penalties will be imposed.

Due to running through mountain terrain, careful footing and approaching the ascent/descents from the correct lines are very important. Also when running in woodland and along trails, be mindful of loose branches, unseen stones, uneven terrain, falling branches, some overgrowth, stiles to negotiate, and slippery surfaces. The main danger is presented by steep drops, close to cliff edges on a number of occasions throughout the race. So please watch your footing and have a good bearing of where you are.

For those new to this type of event, the team is always happy to help with any queries so please feel free to get in touch via info@gbultras.com.

Be mindful and understanding of other users sharing the trail and please be aware mountain bikes are often frequented in and around Betws-y-Coed, sometimes you’ll hear them before you see them.  Please close gates as you pass through farmland and take care not to drop litter.

For those with a Support Crew, we require a Name and Contact Number for your Support Crew at Race Registration.

**DUE TO LIMITED PARKING AT CHECKPOINT LOCATIONS, A SINGLE VEHICLE PER RUNNER IS PERMITTED. SUPPORT TEAMS MUST NOT ARRIVE AT CHECKPOINTS ANY EARLIER THAN 30 MINUTES BEFORE THE EXPECTED TIME OF THEIR RUNNER**

At checkpoint locations, no more than two Support Crew members supporting an individual runner are permitted at a checkpoint at any one time.  These must not impede the Event team nor other runners.  

Support crews must not take the food nor drink from the checkpoint except for their runner unless given permission to do so.

Support Crews must respect instructions given by Event Staff.  Failure to do so will result in the Support crew being asked to leave the checkpoint and will result in YOUR disqualification.

No dogs are permitted at checkpoints.

Support Crews are not permitted at Checkpoint 1. Support Crews are also not permitted to access the Slate Trail via Gwern Gof Uchaf. You risk disqualification from the event if your support crew turn up at these locations.

Withdrawal prior to the race