24 Marathons in Wales

Find marathons in and around Wales for 2024/2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Click an event for full event details, location, route, sustainability, what's included and how to enter.

An exciting and spectacular event exploring the beautiful Brecon Beacons and finishing deep in the heart of the Black Mountains with incredible support guaranteed.
  • Sat 28 Sep
  • £65
Crickhowell, Powys, UK

Beacons to the Blacks | Marathon

An exciting and spectacular event exploring the beautiful Brecon Beacons and finishing deep in the heart of the Black Mountains with incredible support guaranteed.

  • 26.2 miles trail running + 5869 ft ascent
  • Sat 2 Mar
  • £45
Haverfordwest, Pembrokeshire, UK

Ras Dewi Sant | Full Marathon

Ras Dewi Sant is a great running weekend in Britian’s smallest city. There are 3 routes to choose from. Marathon, Half, and 10K.

  • 26.2 miles trail running
  • Sun 3 Mar
  • £40
Barry, South Glamorgan, UK

Barry 40 Mile & Marathon Track Race | Marathon

38th Edition of the 40 mile (35th Welsh Ultra Champs) and 8th Edition of the Marathon

  • 26.2 miles
  • Sat 16 Mar
  • £47
Carmarthen, Dyfed, UK

Brechfa Trail Races | Marathon

Brechfa Forest is one of Wales' spectacular hidden secrets.

  • 26 miles trail running
  • Sun 17 Mar
  • £46-£48
Burry Port, Dyfed, UK

Great Welsh Marathon Events | Full Marathon

A Fast, flat course set on the scenic Llanelli coastline

  • 26.2 miles road running
  • Sun 24 Mar
  • £40-£42
Colwyn Bay, Clwyd, UK

Colwyn Bay Metric | Marathon

Both races start at the Athletics track in Colwyn bay, from here they head along to the promenade and head East along the coastline where both races have their turning points for you...

  • 26.2 km road running
  • Sun 14 Apr
  • £45
Carmarthen, Dyfed, UK

The Pendine Races | Full Marathon

The Pendine Sands 5K & 10K are on the beach. The Half & Full Marathon take in the full length of the beach and then return along quiet lanes.

  • 26.2 miles trail running
  • Sat 27 Apr
  • £59
Haverfordwest, Pembrokeshire, UK

EnduranceLife - Pembrokeshire | Marathon

As Britain's only coastal National Park primarily designated for its coastal landscape, Pembrokeshire is justifiably famous for its rugged cliffs, quiet coves, expansive sandy bays,

  • 27.3 miles trail running
  • Sat 4 May
  • £65
Brecon, Powys, UK

TEC Brecon Beacons | Marathon

The Brecon Beacons Trail Running Challenge is now entering its 10th year in Talyboont-on Usk and is one of the most popular events on the trail running calendar in Wales.

  • 43 km trail running
  • Sat 11 May
  • £45
Cardiff, Cardiff, UK

Radyr and Morganstown Trail | Marathon

Radyr Trail Half Marathon & Trail Marathon start in Wales' capital city, Cardiff but you'll soon feel a million miles away as you leave the hustle and bustle behind you for idillic trails and scenery.

  • 26.2 miles trail running
  • Sun 12 May
  • £45
Mold, Clwyd, UK

Excalibur Marathon | Marathon

Altitude with Attitude Marathon/Half/10K over 5,500ft of Ascent

  • 26.2 miles trail running
  • Thu 16 May
  • £75
Llanbrynmair, Powys, UK

The Severn Challenge | The Hafren

218 mile, 5-day, multi-day Ultra Marathon. All finishers receive a bespoke medal and a technical tee shirt for each day completed.

  • 26.2 miles trail running
  • Sat 18 May
  • £60
Crickhowell, Powys, UK

Blacks to the Beacons | Marathon

Whether you’re a season Marathon and Ultra runner or this is your first attempt at a longer distance, we guarantee you will have an amazing day. The Blacks to the Beacons is part of our Trail Festival

  • 26.2 miles trail running
  • Sat 18 May
  • £38
Aberdare, Mid Glamorgan, UK

Dare Valley Trail Races | Marathon

Embark on a magical trail running journey through ancient woodlands, hidden reservoirs, towering wind turbines and unrivalled views of the Brecon Beacons National park culminating in a dramatic,

  • 26.2 miles trail running
  • Sat 1 Jun
  • £62
Brecon, Powys, UK

Midnight Mountain | Marathon

The Midnight Mountain Marathon is no ordinary marathon.

  • 26 miles fell running
  • Sat 8 Jun
  • £60
Crickhowell, Powys, UK

Black Mountains | Marathon

Limitless Trails are very excited to be offering another Ultramarathon and Marathon in the beautiful Black Mountains, deep in the heart of the Brecon Beacons National Park.

  • 27 miles trail running + 5505 ft ascent
  • Sat 8 Jun
  • £55
Pwllheli, Gwynedd, UK

The Pilgrims Ultras and Trail Marathon | Pilgrims Marathon

Hundreds of years have passed since pilgrims in their thousands were finding their way to Bardsey Island, drawn there by stories of the special peace to be found at the edge of the Western world...

  • 26.2 miles trail running
  • Sat 15 Jun
  • £45
Dolgellau, Gwynedd, UK

Salomon | Trail Marathon Wales

Taking place in 2024, the Salomon Trail Marathon Wales and Trail Half Hanner will have full (26 mile / 42km) and half (13mile / 21 km) marathon race routes...

  • 26 miles trail running
  • Sat 22 Jun
  • £58
Brecon, Powys, UK

TEC Black Mountains | Marathon

Set at Newcourt Farm in Felindre, Wales, we are in the perfect place for trail running and these challenges are along some of the best trails this region has to offer.

  • 47.37 km trail running
  • Sun 23 Jun
  • £55
Pembroke, Pembrokeshire, UK

The Veloforte Wales Marathon

Discover the only fully closed road marathon in Wales.

  • 26.2 miles road running
  • Sat 6 Jul
  • £75
Caernarfon, Gwynedd, UK

TEC Eryri The Crossing | Marathon

Eryri (Snowdonia) The Crossing 2024

  • 44.4 km trail running
  • Sun 14 Jul
  • £55.99-£59.99
Caernarfon, Gwynedd, UK

XTERRA Snowdonia Trail Marathon Eryri | Marathon

Welcome to the XTERRA Snowdonia Trail Marathon Eryri, a stunning Trail Marathon, Ultra Marathon, Half Marathon and 10k, starting and finishing in Wales' outdoor capital, Llanberis.

  • 27.3 miles trail running
  • Sat 27 Jul
  • £35
Caernarfon, Gwynedd, UK

Brutal 300 | Marathon

Lap after lap after lap, until you either finish or go insane…

  • 26.2 miles multi terrain running
  • Sat 7 Sep
  • £38
Caernarfon, Gwynedd, UK

Marathon Creulon | Full Marathon

This amazing route takes you on an undulating trail run around the lake and then up and down Wales's highest mountain, Yr Wyddfa (Snowdon).

  • 26.2 miles trail running

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