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Mountainous Trail runs in UK

Find mountainous trail runs in UK in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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A breathtaking mountain challenge through Snowdonia’s rugged heart — climb steep ridges, conquer iconic peaks and soak up awe-inspiring views across lakes, valleys and the dramatic Ogwen range.
  • Sun 12 Apr
  • £37.99-£79.99
Betws-y-Coed, Clwyd

Ogwen | Yr Helgi Du

A breathtaking mountain challenge through Snowdonia’s rugged heart — climb steep ridges, conquer iconic peaks and soak up awe-inspiring views across lakes, valleys and the dramatic Ogwen range.

  • Trail run 3
Join Scotland’s biggest ultramarathon! Take on a true wilderness running adventure through the Scottish Highlands, with flexible distances and an unforgettable expedition feel.
  • Sat 2 - Sun 3 May
  • FREE-£290
Inverness, Highland

Ultra X Scotland

Join Scotland’s biggest ultramarathon! Take on a true wilderness running adventure through the Scottish Highlands, with flexible distances and an unforgettable expedition feel.

  • Ultra run 4
  • Trail run 2
The ultra is graded ‘very hard’ and one to get into your ultra running calendar if you’re looking for UTMB index runs where you can bag points. Includes Full Weekend Festival Ticket in the price!
  • Sun 17 May
  • £85
Keswick, Cumbria

Keswick Mountain Festival | adidas TERREX 50K Trail Ultra Marathon

The ultra is graded ‘very hard’ and one to get into your ultra running calendar if you’re looking for UTMB index runs where you can bag points. Includes Full Weekend Festival Ticket in the price!

  • 50 km trail running + 1800 m ascent
Take on England’s finest countryside at your own pace with stunning views all the way, featuring the Garburn Pass, historic Ambleside, a halfway point by Lake Windermere, forests and nature reserves.
  • Sat 6 - Sun 7 Jun
  • £39-£199
Kendal, Cumbria

Lake District Ultra Challenge

Take on England’s finest countryside at your own pace with stunning views all the way, featuring the Garburn Pass, historic Ambleside, a halfway point by Lake Windermere, forests and nature reserves.

  • Trail run 2
  • 50K ultra run 2
  • 100K ultra run 2
  • Marathon
Your chance to take on one of the UK’s most demanding and spectacular trail races, set deep in the heart of Eryri (Snowdonia) National Park, offering a true mountain challenge.
  • Sat 11 - Sun 12 Jul
  • £31.99-£319.99
Caernarfon, Gwynedd

Snowdonia Trail Marathon Eryri Events

Your chance to take on one of the UK’s most demanding and spectacular trail races, set deep in the heart of Eryri (Snowdonia) National Park, offering a true mountain challenge.

  • 10K run
  • Half marathon
  • Marathon
  • Ultra run 2
Want the excitement of being part of Lakes in a Day but with less navigation? This half distance option takes you on a journey from Ambleside to Cartmel on a fully waymarked route.
  • Sat 10 Oct
  • £80
Ambleside, Lake District National Park

Lakes in a Day | 23 Miles

Want the excitement of being part of Lakes in a Day but with less navigation? This half distance option takes you on a journey from Ambleside to Cartmel on a fully waymarked route.

  • 23 miles trail running + 850 m ascent
  • Sat 2 May
  • £50-£99
Brecon, Powys

Rasus y Bannau

  • Marathon
  • Ultra run
  • 100K ultra run
  • Sat 9 May
  • £55-£150
Brecon, Powys

Tenacious Ten Hour Endurance Challenge

  • 10 hrs trail running
  • Sun 10 May
  • £36-£46
Mold, Clwyd

Excalibur Trail Races

  • Mountain marathon
  • Half marathon
  • 10K run
  • Sun 31 May
  • £55
Ambleside, Cumbria

Lake District Running Festival | Grasmere Gallop 42km Trail Run

  • 42 km trail running + 1905 m ascent
  • Sat 6 Jun
  • £45-£65
Brecon, Powys

Midnight Mountain Marathon

  • Mountain marathon
  • Half marathon
  • Sat 6 Jun
  • £130-£140
Ambleside, Lake District National Park

Scafell Sky Ultra

  • 60 km trail running + 4400 m ascent
  • Sat 11 Jul
  • £55-£100
Hereford, Herefordshire

Black Mountains 50 & 32 Mile Ultra, Marathon & Half Marathon

  • 50K ultra run
  • Half marathon
  • Mountain marathon
  • Ultra run
  • Sat 18 Jul
  • £130-£140
Penrith, Cumbria

Rab Helvellyn Sky Ultra

  • 57 km trail running + 3700 m ascent
  • Sat 18 Jul
  • £110-£120
Penrith, Cumbria

St Sunday Sky Race

  • 29 km fell running
  • Sat 15 Aug
  • £60-£80
Buckie, Moray

The Speyside Way 50K & 100K

  • 50K ultra run
  • 100K ultra run
  • Sat 15 Aug
  • £39-£139
Caernarfon, Gwynedd

SkyRun Eryri

  • Trail run 3
  • 50K ultra run
  • Sun 23 Aug
  • £52-£57
Keswick, Cumbria

Scafell Pike Marathon

  • 27 miles trail running

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