Black Diamond Yr Wyddfa Snowdon24
Sat 12 - Sun 13 Jul 2025 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 12 - Sun 13 Jul 2025
Llanberis, Caernarfon

Black Diamond Yr Wyddfa Snowdon24

10:00

Age 18 & over

£121.99-£251.99

  • 24 hrs trail running

Event overview

Your ticket to compete in one of the UK's most challenging trail races.

runners

The incredible routes explore the trails, gorgeous panoramic views and tough climbs that make Snowdonia National Park so popular with outdoor enthusiasts.

Visiting Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass, and Snowdon, there surely can't be a more striking trail marathon route in the UK!

Highlights

  • One of the UK's most challenging trail races

    The ultra, marathon and 24hr event are UTMB-indexed.

  • XTERRA Trail Run World Series

    The marathon and half marathon are part of the World Series.

  • Spectacular scenery

    Unbeatable views across Eryri (Snowdonia).

  • Lively event village

    Music, commentary, shopping, food, kit demos and toilets.

  • Family friendly vibes

    Family finishes and plenty to see and do.

  • Support and fuel

    Friendly marshals, signage, energy stations and support vehicles.

  • Unique finisher mementos

    Beautifully designed to reflect our event locations and local history.

  • Professional timing

    Chip timing, live tracker and online results.

World Series

The Snowdonia Trail Marathon and Half Marathon are the Xterra Trail Run World Championship.

The XTERRA Trail Run World Series connects the entire trail running community through a global rankings system, regional championships, and for those who qualify - the XTERRA Trail Run World Championship.

This event is part of XTERRA Snowdonia Trail Marathon Eryri Events.

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

Kit

A list of compulsory and advisable kit is readily available.

Walking poles

You are permitted to carry and use walking poles if you wish to.

Families

The event village is family-friendly and is at a location with lots on offer for families. There'll be a great atmosphere for spectators who can track the person they are supporting using an app so they don't miss them at key points.

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

Event HQ

Llanberis
Llanberis
Caernarfon
Gwynedd
LL55
UK

Llanberis, North Wales has superb transport links and is incredibly easy to find.

Registration

Registration is located on the event field in Llanberis situated next to the Community Centre - LL55 4UR.

location

Parking

Parking information is included in your Final Instructions email. Please be considerate to local residents when parking and use official event parking or pay and display car parks.

By car

There’s quick, straightforward access from the North West along the M56 and A55. Motorway links with the Midlands are good too, and the same roads – the M6, M5 and M1 – also bring Snowdonia within easy reach of the South of England

By rail

Direct services (including direct trains from London to Bangor) take you to the popular North Wales coastal destinations from most parts of Britain.

The closest station to Llanberis is Bangor, which is just under 10 miles away. A taxi from here will cost approximately £25. The Sherpa S2 bus will take you from the station and cost between £3-£5. It is possible to cycle.

By sea

Irish Ferries and Stena Line operate regular and high-speed services to Holyhead from Dublin.

By air

Transfers from the international gateways of Manchester, Liverpool and Birmingham take less than two hours.

Accommodation

Llanberis and the surrounding areas offer a wide range of hotels, bed and breakfast, campsites and hostels.

The Royal Victoria Hotel is recommended.

  • Cut off time
  • First aid
  • Food stations
  • Marshals
  • Mass start
  • Mountainous
  • Multiple laps
  • No headphones
  • Sleeping facilities
  • Timed section
  • Toilets
  • Water stations

Overview

Based in Llanberis village the route will take you up and down the Llanberis Path; a 15km out and back route taking you past the legendary Half Way House, Allt Moses, Clogwyn Bridge and ultimately on to the summit of Yr Wyddfa before heading back down to the event village, some much-needed refreshments, and another lap!

Introduction

Yr Wyddfa (Snowdon), 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 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.

Rest stops

There are no aid stations out on the course. The following are available for participants:

  • Lap point - fruit, crisps, sweets, coke, HIGH5 electrolyte drink and gels.
  • Solo Participant Chill Out Zone - fruit, crisps, sweets, coke and additional savoury options. Please bring your own reusable plate or bowl for the savoury options.
  • Respite Area - hot water will be available to rehydrate dried food packs or make tea and coffee.
  • On-Site 24-Hour Vendor - selection of local food vendors will be available in the event village (close to the lap point) to provide additional options for participants and spectators. At least one vendor will be open at any point in the 24hr race.

Race winners

The challenge is to complete as many ascents and descents of Yr Wyddfa (Snowdon) as possible within the 24-hour period. 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!

UTMB index event

Mandatory to enter the UTMB Mont-Blanc lottery, a valid UTMB Index is achieved by completing at least one race of the UTMB World Series or a UTMB Index race in the relevant category within the previous 24 months.

Yr Wyddfa | Snowdon24 offers 50K, 100K and 100-mile UTMB classification challenges, which will be submitted for UTMB indexing for all solo participants.

  • UTMB index 3

    3 times ascend and descend – Yr Wyddfa Triple - UTMB 50K Category

  • UTMB index 4

    4 times ascend & descend - The Eiger Challenge - UTMB 50K Category

  • UTMB index 5

    5 times ascend and descend – The Mont Blanc Challenge - UTMB 100K Category

  • UTMB index 6

    6 times ascend and descend - The Kilimanjaro Challenge - UTMB 100K Category

  • UTMB index 7

    7 times ascend and descend – The Ama Dablam Challenge - UTMB 100 Mile Category

  • UTMB index 8

    8 times ascend and descend – The Annapurna Challenge - UTMB 100 Mile Category

  • UTMB index 9

    9 times ascend and descend –The K2 Challenge - UTMB 100 Mile Category

  • UTMB index 10

    10 times ascend and descend – The ultimate Everest Challenge! UTMB 100 Mile Category

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

As a local Welsh company the organiser's goal is to showcase the beautiful natural environment without causing harm. Event since their first race in 2011, they have avoided plastic bottles, offered locally-sourced Welsh slate finisher mementoes and have lead on sustainability in events.

  • Chip timing
  • Eco medal
  • Event app

Prizes

There will be a prize-giving ceremony after the racing, at approximately 11am. Exact timings will be detailed in the Final Instructions, however, it is a good idea to listen out for any updates that come in over the tannoy; sometimes the ceremony may be delayed and you don't want to miss out. Prizes are not sent out after the event, so make sure you attend the ceremony and receive your big Welsh cheer!

Prize categories

Most number of ascents and descents (laps) - Male and Female.

Most number of ascents and descents (laps) - Male, Female and Mixed Pairs.

Most number of ascents and descents (laps) - Team of 3, 4 and 5.

Awards

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 which identifies the highest level achieved.

  • 3 times ascend and descend – Yr Wyddfa Triple
  • 4 times ascend and descend - The Eiger Challenge
  • 5 times ascend and descend – The Mont Blanc Challenge
  • 6 times ascend and descend – The Kilimanjaro Challenge
  • 7 times ascend and descend - The Ama Dablam Challenge
  • 8 times ascend and descend - The Annapurna Challenge
  • 9 times ascend and descend - The K2 Challenge
  • 10 times ascend and descend – The ultimate Everest Challenge!

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

You will need to attend registration which will take place on Friday evening and Saturday morning before the race - we will confirm specific times in your Final Instructions, which will be available on the website and via email 10 days prior to the race.

Registration is usually located in Llanberis, on the field situated next to the Community Centre - LL55 4UR.

Entry fees

Entry fee

£121.99

Valid to 10/07/2025

Pairs entry fee

£191.99

Valid to 10/07/2025

Team entry fee

£251.99

Valid to 10/07/2025

If you are looking for a challenge, the Snowdonia Trail Race is up there with the toughest in the U.K. A punishing and beautiful experience in equal measure, ensure this one is on your bucket list. Luke Royle (2019) RaceCheck

Absolutely AMAZING day - so well signposted, not the slightest chance of getting lost and wonderful camaraderie amongst all runners. I met some really wonderful people at various points on the course and it really keeps you going strong!!! Anonymous post-event feedback 2023

Loved running the marathon - many thanks for what was the best organised trail event I’ve done. The Marshalls were brilliant.  Post event feedback 2023

 

 

My first trail marathon and what can I say but 'WOW’. Adam Gurney, Racecheck

Race village, route marking, feed stations, marshals, views and sense of achievement at the very highest standard. Do it! Matt Hall (2022) RaceCheck

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