25 Trail runs in Wales in May 2024

Find trail runs in and around Wales in May 2024 - 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.

  • Sat 4 May
  • £60
Llanidloes, Powys, UK

The HOWUM

A 30 mile challenge into the HEARTLANDS of WALES and the source of the River Severn.

  • 30 miles trail running
  • Sat 4 May
  • £75
Brecon, Powys, UK

TEC Brecon Beacons | Ultra

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.

  • 52 km 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 4 May
  • £52
Brecon, Powys, UK

TEC Brecon Beacons | Half 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.

  • 27.2 km trail running
  • Sat 4 May
  • £40
Brecon, Powys, UK

TEC Brecon Beacons | 10K

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.

  • 10.6 km trail running
  • Sun 5 May
  • £5
Llangollen, Clwyd, UK

Llangollen Trail Race | Kids 1 Mile

Welcome to the most beautiful 10K run in the UK.

  • 1 mile trail running
  • Sun 5 May
  • £17-£19
Llangollen, Clwyd, UK

Llangollen Trail Race | 10K

Welcome to the most beautiful 10K run in the UK.

  • 10 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
  • Sat 11 May
  • £35
Cardiff, Cardiff, UK

Radyr and Morganstown Trail | Half 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.

  • 13.1 miles trail running
  • Sat 11 - Sun 12 May
  • FREE-£130
Prestatyn, Clwyd, UK

24 Hours South - The Offa's Dyke ULTRA

24 hours - South....along the Offa's Dyke Footpath. How far will you get?

  • 24 hrs 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
  • Sun 12 May
  • £45
Mold, Clwyd, UK

Excalibur Marathon | Marathon Canicross

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

  • 26.2 miles trail running
  • Sun 12 May
  • £40
Mold, Clwyd, UK

Excalibur Marathon | Half Marathon

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

  • 13.1 miles trail running
  • Sun 12 May
  • £40
Mold, Clwyd, UK

Excalibur Marathon | Half Marathon Canicross

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

  • 13.1 km trail running
  • Sun 12 May
  • £35
Mold, Clwyd, UK

Excalibur Marathon | 10K

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

  • 10 km trail running
  • Sun 12 May
  • £35
Mold, Clwyd, UK

Excalibur Marathon | 10K Canicross

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

  • 10 km 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
  • £35
Crickhowell, Powys, UK

Blacks to the Beacons | 32 Mile Ultra

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

  • 12 km 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
  • £85
Crickhowell, Powys, UK

Blacks to the Beacons | 50 Mile Ultra

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

  • 50 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 18 May
  • £35
Aberdare, Mid Glamorgan, UK

Dare Valley Trail Races | Half 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,

  • 13.1 miles trail running
  • Sat 18 May
  • £45
Crickhowell, Powys, UK

Blacks to the Beacons | Half 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

  • 13.1 miles trail running
  • Sat 18 May
  • £30
Aberdare, Mid Glamorgan, UK

Dare Valley Trail Races | 10K

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,

  • 10 km trail running
  • Wed 22 - Mon 27 May
  • £425-£449
Chepstow, Gwent, UK

South Wales 200

Wild thing. You make my heart sing. You make me run 200 miles across South Wales. Wild thing - The South Wales is returning in 2024.

  • 5 days trail running

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