Snowdon24
Llanberis, United Kingdom • 11 Jul 2026
Event overview
Black Diamond Yr Wyddfa | Snowdon24 is a 24-hour ultra trail event on Yr Wyddfa (Snowdon) in Eryri (Snowdonia). The mountain is listed at 1,085 m (3,560 feet). The event is based at Y Ganolfan, Llanberis (LL55 4UR) and runs across 11–12 July 2026. The objective is to ascend and descend the mountain as many times as possible within the 24-hour period, starting and finishing at the foot of the peak.
Categories and format
Entries are available for solo athletes and teams of up to five using a relay format. The solo event is UTMB-indexed and includes the following challenge categories:
- 50k
- 100k
- 100-mile
The current solo record is eight full ascents.
Logistics and support
The event features an event village with toilets, food, shopping, music and daytime commentary. On-course support includes marshals, signage and Mountain Leader support. Facilities also include rest areas and tent pitches. Timing and results use chip timing, tracking and online results. The event is bilingual with information available in English and Welsh. Always Aim High Events is the organiser and 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.