Saturday 14th September 2024

GB Ultras welcome ultra-runners to the remarkable Snowdonia National Park and the beautiful village of Betws-y-Coed (translated as 'Prayer house in the woods' in Welsh) for the 6th Edition of Yr Wyddfa Ultra!

With 3254m of ascent, mountain trails lead to Heather Terrace on Tryfan, Yr Wyddfa summit, Glyder Fach and Glyder Fawr, Devil’s Kitchen and Llyn Idwal before taking in the fantastic trails beside Llyn Crafnant and Llyn Geirionydd!

Ready for the challenge?

Secure your Yr Wyddfa Ultra 50 place now for only £99

Follow the Yr Wyddfa Ultra page & join the GB Ultras Community Group.

Course Records

Mens PB – Joint 1st Place: Sean Merryweather (GBR) & Jon Shield (GBR) – 10:41:28 – 2022 High Route

Ladies PB – Joint 1st Place: Melinda Marchal (GBR) & Josie Nye (GBR) – 12:23:37 – – 2022 High Route 


Are You Ready To

Explore Snowdonia Eryri? Be Challenged? Take on the Mountains? Earn YOUR Medal?

Gold, Silver or Bronze?

Top 100 finishers earn a Gold Yr Wyddfa Snowdon Ultra Medal, 101-200 finishers earn a Silver Yr Wyddfa Snowdon Ultra Medal and 201+ finishers earn the Bronze Yr Wyddfa Snowdon Ultra Medal. (Please note medal may change to new style)

There are additional Bespoke GB Ultras Trophies for the Top 3 Male and Top 3 Female finishers.

Click Below To Watch The Live Online Tracking

All of the 'Yr Wyddfa Snowdon Ultra' 50 Mile Information

We want you to have the most amazing time at the Yr Wyddfa Snowdon Ultra 50! All the information you need to participate in this event is below.

At least 20 years old + at the time of the race (Rule T3 (141) S5 UKA Trail Running).

In good health and must have run at least a marathon distance race prior to the event.  

NEW 2024 standard – previous ultramarathon experience and/or mountain experience. Reviewed on a case by case basis.

Race experience can be for an event not yet taken place but that will be completed prior to Yr Wyddfa Ultra start.

Runners are expected to be competent map readers for their own safety willing to use their map & compass throughout the event especially in low cloud/poor weather conditions and a night time.

Start & Finish Venue

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

Pre-Race Registration – Friday 13th September 2024

5.00pm – 9.00pm Race Registration – Bib Number Collection only

Race Day – Saturday 14th September 2024

4.15am – 5.30am Bib Number Collection & GB Race Tracker Collection
6.00am – Race Start 100 Mile Snowdon Ultra 
6.15am – Race Start 50 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).

Alternatively, those travelling up on the Friday prior to Race day might be able to make arrangements with their hotel, should they be staying locally.

Yr Wyddfa Snowdon Ultra 50 has 5 Checkpoints en route with the principle aim of maintaining the highest level of support possible alongside our dedicated mountain support teams.

Cut-Off times per Checkpoint – These conditions include the length of time taken to complete sections of the course and they are implemented by the Event Organisers, GB Ultras, at their discretion, to the ensure safe and proper running of the event.

There is a 21 hour cut off time for the event.  These are strict.

The locations of the Checkpoints are:

Checkpoint 1: 9 Miles SH68510 60202 Gwern Gof Isaf, LL24 0EU – Cut off 9:51am

Checkpoint 2: 13 Miles SH66150 55920 Llyn Pen-y-Gwryd Car Park, LL55 4NT – Cut off 11:58am

Checkpoint 3: 23 Miles SH66150 55920 Llyn Pen-y-Gwryd Car Park, LL55 4NT (after summiting Yr Wyddfa) – Cut off 17:11pm

Checkpoint 4: 28 Miles SH64968 60372 Pont Pen-y-Benglog, LL57 3LZ – Cut off 20:15pm

Checkpoint 5: 38 Miles SH75665 61843 Llyn Crafnant Car Park, approx. LL27 0YX – Cut off 23:34pm

Finish: 47 Miles SH79450 56498 Betws-y-Coed Village Green – Cut off 3:15am Sunday

Please note: Should a runner reach the finish line after the cut off time then NO medal can be awarded as it compromises the integrity of the event.

Mandatory kit to be carried at all times during the race. Runners failing to carry all items of mandatory kit will be disqualified. Random kit checks will be carried out during registration, during the Race and at the finish line.

Snowdon Ultra Mandatory Kit

Hardcopy Map: Ordnance Survey (OS Explorer): Map OL17 Snowdon/Yr Wyddfa 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 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,
Headtorch – Min 75 Lumens,
Emergency Rations – Min 500 Calories,
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).

Wet Weather Kit – Please prepare your wet weather kit to be part of the Mandatory Kit

Waterproof pants
Warm Hat

Recommended Kit

First Aid Kit.
GPS Watch/Personal GPS handheld device,
Mountain/Trekking Poles.

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

Ultra-Marathon 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 there 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 covering the route section by section, and a Mandatory Kit Brief and Race Brief is available to watch on the website.

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 Organiser’s 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.

Adverse Conditions during Yr Wyddfa Ultra 50 race – Low Level Route Options

Take Instruction and advice from Snowdonia National Park, the National Trust, Natural Resources Wales, and Mountain Rescue teams as well as reports from event staff and participants on the day and weather forecasts in advance and during the event.

Potential low level alternatives below actioned by Event day staff and participants informed at Race Brief or on arrival at Checkpoint.

  1. Avoidance of Heather Terrace in high winds – Mountain support team 1: Section marshals in position to action low level route option.
  2. Ascent of Yr Wyddfa/Snowdon via Pyg Track and descent down Miners Track – Mountain support team 2: Section marshals in position.
  3. Ascent of Glyders via the Miners Track after leaving CP3 – Mountain support team 3: In adverse/severe weather conditions, mountain marshals positioned to action the descent to Ogwen Cottage (CP4) via Bwlch Tryfan, Llyn Bochlwyd.

Before the race

Due to the nature of the event, costs are incurred as soon as a participant signs up, no refunds are possible in this event.

We allow deferrals to the following years race or transfer of your place to another runner subject to the timescales below. Transfers to another runner are also subject to the replacement runner meeting the qualifying criteria for the event (please see the Qualifying Criteria section).


Any deferrals to the following years Race must be requested by emailing the event team at events@gbultras.com no later than 8 weeks prior to the event subject to payment of an administration fee. No deferral requests will be permitted after this time. Click here to pay the Admin Fee.

Please note that a deferral is permitted for 1 year only (unless due to pregnancy – please see GB Ultras Pregnancy Deferral Policy below).

Pregnancy Deferral

  1. Women who have entered a GB Ultras event and are, or become, pregnant prior to race day can defer entry for up to two years.
  2. Women who fall pregnant again during the deferral period may request another deferral for up to an additional two years.
  3. Partners are also able to defer for one year if the birth is imminent.
  4. To defer please email events@gbultras.com with the medical certificate/medical confirmation of the pregnancy/birth.
  5. All other rules and requirements for race entry will apply.

Transfers to another runner

Transfers are possible up until 3 weeks before the Race day providing qualifying criteria is met (see Qualifying Criteria section) and payment of an administration fee. No transfer requests will be permitted after this time. Click here to pay the Admin Fee.

The replacement runner must complete the Application Form which will be reviewed and if accepted, we will confirm this to the you and the replacement runner.  Please note that applications are not guaranteed to be accepted as the runner must demonstrate a required level of competency to take part in the event.

Once the administration fee has been paid, please email the event team at events@gbultras.com with the following details of the replacement runner who will be applying for your place. 

During the race

Please inform a GB Ultras Race Marshal at one of the Checkpoint’s or Race HQ.  This will ensure all participants who are registered and pull out of the race are accounted for, allowing for the accurate and safe running of the event.  If a participant withdraws at a Checkpoint they must hand over their Race Number & GPS Tracker to the Event team to signal their retirement.  Marshals’ will inform the race organiser and each of the remaining Checkpoints can update their event documentation.

Upon withdrawal from the race, it is the responsibility of the individual to get themselves home (or to the event finish if required to collect their dropbag). Given the size of the Start line, we would recommend having your own Support Crew in case withdrawal during the event is needed.

Where possible, runners withdrawing from the race maybe able to be transported by GB Ultras event support from a checkpoint back to Race HQ however this cannot be guaranteed.  Priority will be given to runners still participating in the race.

Where it is possible to transport a runner to the finish, this will only be available after a checkpoint closes and therefore may involve a significant wait.  In addition, as event teams are deployed to multiple checkpoint locations, transport to the finish may involve intermediate stops on route for further (potential lengthy) periods of time to the finish.

GB Ultras also reserve the right to pull any participant out of the race on health grounds.

Play Video

Yr Wyddfa Ultra 50 Race Brief Video

Play Video

Yr Wyddfa Ultra 50 Mandatory Kit Video

The Route

Runners follow the Snowdonia Slate Trail past Swallow Falls to the foot of the Eryri mountains and take on some of the toughest terrain in Wales!

With live online GPS tracking from GB Race Tracker & #GBUltras support at checkpoints along the trail, it’s a race you’ll always remember! Finishers attain UTMB/ITRA Mountain Points, the race is a stunning challenge and a Navigation event.

Part Of The 50 Mile Grand Slam

Take on 5 of our 50 Mile Ultra Marathons for the Grand Slam Medal or take on 8 50 Mile Ultra Marathons for the Super Slam & get in to the Hall of Fame

Training Runs

All ‘entrants’ are invited to join the Team on training runs covering key sections of the Yr Wyddfa Snowdon Ultra route prior to Race day. You can attend as many as you like, one day or both days of any given training weekend with the aim of learning the route and increasing confidence come Race day. You’ll also have the chance to meet other runners taking on the Race.  Training runs will have a small charge of £19.99 for 1 day or £34.99 for both days for attendance. Included is –

  • Fully guided recce run
  • Mandatory kit advice
  • Exclusive group messenger chat for recce and race prep
  • Limited edition buff
  • Meet the team
  • Gain trail experience and knowledge

Pace wise we’ll be going at a nice gentle pace ensuring all runners stay as a group with brief stops approximately every mile.
Generally our training runs have high attendance and for safety reasons we’ll be imposing a limit depending on feedback. 

Weather conditions can change very quickly in the mountains so we recommend runners refer to the Mandatory kit section and carry sufficient food/water for the duration of each of the runs. No overnight accommodation is included. However, runners may be interested to learn that Gwern Gof Isaf (Checkpoint during the race itself) is a Campsite and would be a good choice for overnight stops.  There’s also Gwern Gof Uchaf Campsite closer to Tryfan too.

Section Covered

Tryfan’s Heather Terrace and joining the trails to Yr Wyddfa (Snowdon) Summit and down to CP2/3 – 14 Miles

Starting point

8:00am Outside of Gwern Gof Uchaf (Parking available on the large lay-by outside of the campsite), Capel Curig, LL24 0EU.

Finish point

Checkpoint at Llyn Pen-y-Gwryd Car Park (Pay and Display – coins needed), nr to Pen Y Gwryd Hotel, LL55 4NT. Car Sharing: Required.

Section Covered

Covering miles 23 – 46 miles of the route including the Glyder Fawr, Glyder Fach, Devils Kitchen, and then joining the Snowdonia Slate Trail to Crimpiau, Llyn Crafnant & Llyn Geirionydd before finishing at Betws-y-Coed.

Starting point

8:00am Llyn Pen-y-Gwryd Car Park, nr to Pen Y Gwryd Hotel, LL55 4NT.

Finish point

Gwern Gof Uchaf, Capel Curig, LL24 0EU – parking at layby outside of campsite. Car Sharing: Required.

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