Snowdon24

Llanberis, United Kingdom • 11 Jul 2026

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.

Race information

100 mi
24-Hour Solo 100-Mile
100 km
24-Hour Solo 100k
50 km
24-Hour Solo 50k
24-Hour Solo
24-Hour Relay
Visit the organization's website for the most recent information.
Trail runs nearby

A 102 km mountain course from Barmouth to Llandegla with 4663 m of ascent; navigation and significant experience are required, entries are limited and vetted, and a support car is mandatory.

A short fell race at Padarn Lake Hotel in Llanberis covering 3.1 km with 192 m of climb. It is a warm-down for the Joe Brown/Caernarfon Tyres Midweek Series and follows the North Wales Mid Week Series schedule.

A fell race of 8.7 km with 700 m ascent around Moel Siabod, partially marked and requiring navigation. Entry on the day is £5 and junior races are included as part of the Capel Curig Village Festival.

A coastal trail event from Glan Y Don Beach to Tŷ Newydd Campsite covering around 50 km of beaches, trails, woodlands and fields with about 1,000 m of ascent. Entry includes a T shirt, finisher medal and event support.

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.