Events / Trail Running

Black Diamond Yr Wyddfa | Snowdon24 2024

Yr Wyddfa, or Snowdon in English, is the highest mountain in Eryri (Snowdonia), and also the whole of England and Wales. It peaks at an impressive 1,085 m (3,560 feet).

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 Snowdon as many times as possible in 24 hours.

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.

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.


13 Jul - 14 Jul 2024




Race and Route Information

Runner in the Snowdonia Ultra Trail Marathon descending Yr Wyddfa (Snowdon)

Black Diamond Yr Wyddfa | Snowdon24 Ultra Trail 2024

24 hour

13 Jul - 14 Jul 2024

Run: As far as you can!

Find out more Yr Wyddfa | Snowdon 24

What's Included

Red Bull tent at the Snowdonia Ultra Trail Marathon Event

Lively Event village

Toilets, food, shopping, music and commentary during daylight hours.

XTERRA Snowdonia TMS 2022 Saturday 125

Rest Areas

Silent respite area, tent pitches and chill out zone

Runner & Marshal on the Snowdonia Ultra Trail Marathon route, Snowdonia

On Course Support

Friendly marshals, signage and Mountain Leader support.

Yr Wyddfa24 Slate Mockup

Unique Finisher Mementos!

Beautifully designed to reflect our event locations and local history.

Runner on the Ultra Trail in Snowdonia, going uphill.

Spectacular Scenery

Unbeatable views across Eryri (Snowdonia)

Finish line photograph from the Snowdonia Trail Marathon & Snowdon24 Ultra Trail Challenge

Professional Timing

Chip timing, live tracker and online results

Charity runners on the Snowdon24 ultra trail snowdon challenge.

If you are looking for a challenge, as a team or as an individual and want to see how far your mind and body can go, this is a must-do race to add to the bucket list!

2022 Participant

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