Snowdon24
Llanberis, United Kingdom • 11 Jul 2026
Event overview
Black Diamond Yr Wyddfa | Snowdon24 2026 is a 24-hour ultra trail challenge based at Y Ganolfan, Llanberis, in Eryri (Snowdonia) National Park. The course uses Yr Wyddfa (Snowdon), which reaches 1,085 m (3,560 ft). Participants aim to ascend and descend the mountain as many times as possible within 24 hours. The event is UTMB-indexed and offers solo categories corresponding to 50k, 100k, and 100-mile distances. Solo runners have completed up to eight full ascents to date. The event also accepts pairs and teams of up to five using a relay format.
Practical details and support
The event dates are 11-12 July 2026. Tickets are currently sold out and the participant list shows 298 entries. On-site facilities include an event village with toilets, food, shopping, music and daytime commentary; rest areas with tent pitches and a chill-out zone; and course support with marshals, signage and Mountain Leader support. Timing and results use chip timing, tracking and online results. The event provides information and services in English and Welsh. Cancer Research Wales is the official charity partner; fundraisers for other charities are also welcome. The organiser is Always Aim High Events. Visit the organization's website for the most recent information.