Black Diamond Yr Wyddfa | Snowdon24 2025

Starting and finishing at the foot of this iconic mountain, you will be challenged as an individual, or part of a team, to ascend and descend Yr Wyddfa as many times as possible in 24 hours.

Categories for solo runners, pair relay and team (up to 5) relay. Pair and team entries receive one timing chip, meaning only one person will be running at one time.

Being UTMB Indexed, this is also a great qualifying or preparation race for UTMB Mont Blanc. The individual challenges mean that there is a 50k, 100k and 100m mile UTMB indexed challenge.

Yr Wyddfa | Snowdon24 is supporting Cancer Research Wales, dedicated to funding cancer research in Wales. Every week in Wales, 175 families lose a loved one to cancer. If you would like to fundraise please tick the box on your booking form when entering. There is no minimum amount, every penny counts - anyone who raises more than £50 will receive a free shirt from the charity.

If you would like to apply for a free charity place (minimum sponsorship £500) please contact contact-us@cancerresearchwales.org.uk