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Snowdon24

Llanberis, United Kingdom • 11 Jul 2026

Black Diamond Yr Wyddfa | Snowdon24 2026

This 24-hour endurance challenge takes place on Yr Wyddfa (Snowdon) in Eryri (Snowdonia) National Park. Yr Wyddfa is the highest mountain in England and Wales, with a summit at 1,085 metres.

The event challenges participants to complete as many ascents and descents of the mountain as possible within the time limit. It starts and finishes at Y Ganolfan in Llanberis. Participants can enter as solo runners or as part of a relay team of up to five people.

For solo participants, the event is UTMB-indexed and offers categories for distances over 50k, 100k, and 100 miles. The current solo record is 8 full ascents. Teams can share the effort, with each member completing one or more laps of the mountain. Visit the organization's website for the most recent information.

United Kingdom Wales Llanberis

Race information

Website Registration
100 km
Ultra 100k
50 km
Ultra 50k
Ultra 100 Mile
Visit the organization's website for the most recent information.
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