Sat 13 - Sun 14 Jul 2024 Caernarfon, Gwynedd, UK

Black Diamond Yr Wyddfa Snowdon24

Yr Wyddfa (Snowdon) is the highest mountain in England and Wales. Your challenge is to ascend and descend as many times as possible in 24 hours - solo or as a relay team.

  • Sat 13 - Sun 14 Jul 2024
Llanberis, Caernarfon

Black Diamond Yr Wyddfa Snowdon24



Age 18 & over

  • 24 hrs trail running


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.

Race winners

The race winners will be the athletes who complete as many of these as possible.

If a runner begins a lap but does not complete it within the 24-hour period, it will not count towards the total for that runner or team. In the event of a tiebreak on the number of ascents and descents, the fastest will win!

To add to the excitement and motivation individuals, pairs and teams can set the goal of achieving one of the following awards. Awards will take the shape of a unique local slate that marks the highest level achieved.

  • 3 times ascend and descend – Yr Wyddfa Triple Award
  • 5 times ascend and descend – Mont Blanc Award
  • 7 times ascend and descend – Kilimanjaro Award
  • 10 times ascend and descend – the ultimate Everest Award!

Event details

  • All fitness levels
  • Event expo
  • Event village
  • Free venue entry
  • Newcomers
  • Spectators
  • Teams
  • Traders at event


  • Bag storage
  • Cafe
  • Mountains
  • Music
  • Paid parking
  • Toilets


  • Check points
  • First aid
  • Food stations
  • Hilly
  • Marshals
  • Mass start
  • Mountainous
  • Multiple laps
  • Sleeping facilities
  • Timed section
  • Toilets
  • Way markers


  • Bring your own cup
  • Plastic bottle free
  • Plastic-free event
  • Public transport links
  • Recycling
  • Reusable cups
  • Sustainability policy

What's included

  • Chip timing
  • Eco medal
  • Event app
  • Post-race meal
  • Pre-race meal


  • Fundraising support


  • Age 18 & over
  • Enter online
  • Pay by instalments