Snowdon24

Yr Wyddfa | Snowdon24

Yr Wyddfa | Snowdon24 is a 24 hour ultra trail challenge held in Llanberis on 11 Jul 2026. Participants run from the foot of Yr Wyddfa (Snowdon) and attempt to ascend and descend the mountain as many times as possible within the 24 hour window. The event is UTMB indexed and offers recognised distance options for individual entries.

Individual challenge distances include:

• 50k UTMB indexed challenge
• 100k UTMB indexed challenge
• 100m mile UTMB indexed challenge

Entries are available for solo runners and for pairs or teams of up to five in a relay format. Teams share the total number of ascents among members; every team member contributes to the overall result. The event supports fundraising activities and lists Cancer Research Wales as its official charity partner; fundraisers for other charities are also welcome.

Event facilities include an event village with toilets, food and shopping, daytime music and commentary, and rest areas with tent pitches and a quiet zone. On course support comprises marshals, signage and Mountain Leader support. Timing and results use chip timing with online tracking. The route passes through Eryri and offers wide views across Snowdonia. Event services and signage are bilingual in English and Welsh. Visit the organization's website for the most recent information.