Yr Wyddfa Ultra 100

Betws-y-Coed, United Kingdom • 5-7 Sep 2026

Yr Wyddfa Snowdon Ultra 100 - event details

The Yr Wyddfa Snowdon Ultra 100 is a long-distance mountain ultramarathon in Snowdonia (Eryri) listed as 102 miles and described throughout as a 100-mile event. The race takes place on Saturday 5 September 2026, with the start and finish at Cae Llan / Village Green, Station Road, Betws-y-Coed. The event has 250 places, a total cut-off of 42 hours and an entry fee of £199. Live online GPS tracking (GB Race Tracker) and real-time race results are provided. Finishers receive a buckle by placing band: Gold for top 100, Silver for 101-200 and Bronze for 201+; additional trophies are awarded to the top three male and top three female finishers.

Course, support and rules

The route runs from Betws-y-Coed to Beddgelert via the Snowdonia Slate Trail and Nant Gwynant valley and includes 11 checkpoints with on-course refreshments and medical cover at each checkpoint. Checkpoints have enforced cut-off times and all participants must check in at every checkpoint or face disqualification. The race is classed as self-navigation; entrants must be at least 20 years old and have prior ultramarathon (50-mile) and mountain experience, and be competent map readers. Mandatory kit must be carried at all times and is subject to random checks; key items include a hardcopy OS map, compass, waterproof coat and trousers, headtorch, backup light, survival/bivi bag, two base layers, 1 L water capacity, emergency rations (min 500 kcal), whistle and the GPS tracker provided by the organiser. Dropbags are permitted to CP6 and CP10; a single pacer is allowed from CP6 under specific rules. Visit the organization's website for the most recent information.

Race information

102 mi
Yr Wyddfa Snowdon Ultra 100
Visit the organization's website for the most recent information.
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