Snowdon24
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Event details
Black Diamond Yr Wyddfa | Snowdon24 is a 24-hour trail endurance event on Yr Wyddfa (Snowdon), which reaches 1,085 m (3,560 ft). The event takes place in Llanberis, Y Ganolfan, in Eryri (Snowdonia) National Park on 11–12 July 2026. Participants start and finish at the foot of the mountain and aim to ascend and descend Yr Wyddfa as many times as possible within 24 hours. The event is UTMB-indexed and includes solo challenge distances.
Distances
- 50k
- 100k
- 100-mile
Format, entries and support
Entries are available for solo runners and for teams of up to five using a relay format. The current solo record is eight full ascents. Tickets for this event are currently sold out.
The event offers an event village with toilets, food and shopping, daytime music and commentary, rest areas and tent pitches, marshals and signage, and Mountain Leader support on course. Timing includes chip timing, tracking and online results. The event is bilingual in English and Welsh. Cancer Research Wales is the official charity partner; fundraisers for other charities are also welcome. Visit the organization's website for the most recent information.
