Snowdon24
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Event overview
Black Diamond Yr Wyddfa | Snowdon24 is a 24-hour ultra trail running event held in Eryri (Snowdonia) National Park. The course starts and finishes at the foot of Yr Wyddfa (Snowdon), which has a summit elevation of 1,085 m (3,560 ft). The challenge is to ascend and descend the mountain as many times as possible within 24 hours. The event date listed is 11 July 2026 and the location is Y Ganolfan, Llanberis (LL55 4UR). The event is UTMB-indexed.
Race format and categories
The event offers solo and team entries. Solo categories include:
- 50k
- 100k
- 100-mile
Teams may enter in a relay format of up to five members. The listed solo record is eight full ascents within 24 hours.
Support, facilities and additional info
The event provides an event village with toilets, food, shopping, music and daytime commentary. Rest areas include a silent respite area, tent pitches and a chill-out zone. On-course support includes marshals, signage and Mountain Leader support. Finishers receive event mementos. Professional timing with chip timing, tracking and online results is available. The event is bilingual with services in English and Welsh. The official charity partner named is Cancer Research Wales; fundraising for other charities is also accepted. Tickets were listed as sold out on the event page. Visit the organization's website for the most recent information.
