Snowdon24
Llanberis, United Kingdom • 11 Jul 2026
Event details
Black Diamond Yr Wyddfa | Snowdon24 2026 is a 24-hour ultra trail event held in Eryri (Snowdonia) National Park, starting and finishing at Y Ganolfan, Llanberis (LL55 4UR). The course centers on Yr Wyddfa (Snowdon), which has an elevation of 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 distance categories that can count as UTMB qualification or preparation.
Distances (solo UTMB-indexed)
- 50 km
- 100 km
- 100 miles
The posted solo record is eight full ascents.
Format and practical information
The event accepts solo entries and teams in relay format of up to five people. Teams may split laps among members. Tickets for the event are currently shown as sold out on the organiser page. The official charity partner is Cancer Research Wales; fundraising is allowed with no minimum donation for general fundraisers. A free charity place option is noted with a minimum sponsorship requirement of £500, and fundraisers who raise more than £50 may receive a shirt from the charity.
On-site services include an event village with toilets, food outlets, shopping, and daytime commentary, rest areas and tent pitches, on-course marshals, signage and Mountain Leader support, chip timing with tracking and online results, and bilingual provision in English and Welsh. Visit the organization's website for the most recent information.