Snowdon24

JUL
11
2026
A 24 hour ultra trail on Yr Wyddfa in Llanberis where solo runners or teams of up to five complete as many ascents and descents as possible. The event is UTMB indexed and offers chip timing, on course support and bilingual services.
Sat 11 Jul 2026
100 miles 100 kilometers 50 kilometers

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Yr Wyddfa | Snowdon24

Yr Wyddfa | Snowdon24 is a 24 hour ultra trail event held in Llanberis, Eryri (Snowdonia). The format asks participants to ascend and descend Yr Wyddfa (Snowdon) as many times as they can within a 24 hour period. The route starts and finishes at the foot of the mountain.

The event offers individual and team entry options. Solo runners take part in the continuous 24 hour format. Teams of up to five compete in a relay format so each team member can contribute multiple ascents.

Individual UTMB indexed challenges available include:

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

The programme lists a race village with toilets, food stalls, shopping, music and daytime commentary. Rest facilities include a silent respite area, tent pitches and a chill out zone. On course support comprises marshals, route signage and Mountain Leader support. Timing and results are provided with chip timing, tracking and online results. Finishers receive event mementos designed to reflect the local location.

The event partners with Cancer Research Wales as an official charity partner. Fundraising for this and other charities is possible; there is no minimum fundraising amount for general fundraisers and those who raise more than £50 receive a free charity shirt. The event provides bilingual services in English and Welsh. Visit the organization's website for the most recent information.

100 mi
100 Mile Challenge (utmb-Indexed)
100 km
100k Challenge (utmb-Indexed)
50 km
50k Challenge (utmb-Indexed)
24 Hour Team
24 Hour Solo
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