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100K ultra runs in South West

Find 100k ultra runs near me in South West 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.

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Test yourself for charity in the rolling hills of the Cotswolds featuring the Cotswold Way, trails and fabulous views, with routes from 10km right up to 100km there’s something for everyone!
  • Sat 22 - Sun 23 Jun
  • £10-£40
  • Entries close soon
  • Sat 22 - Sun 23 Jun
  • £10-£40
  • Entries close soon
Cirencester, Gloucestershire, UK

Cotswold Way Ultra Challenge

Test yourself for charity in the rolling hills of the Cotswolds featuring the Cotswold Way, trails and fabulous views, with routes from 10km right up to 100km there’s something for everyone!

  • Newcomers
  • Entertainment
  • Music
  • Chip timing
  • Enter online
  • GPS tracking
  • Fundraising required
  • Undulating
  • Hilly
  • Event village
  • Urban
  • Rural
  • Age 14 & over
  • 1 day trail running
Love long distance trail running and the coast? Then you'll love this fantastic trail running event which kicks off the Somerset & Exmoor Coast Festival.
  • Sat 21 Sep
  • £65
  • Sat 21 Sep
  • £65
Minehead, Somerset, UK

Somerset Coast Challenge | 100K

Love long distance trail running and the coast? Then you'll love this fantastic trail running event which kicks off the Somerset & Exmoor Coast Festival.

  • Enter online
  • Age 16 & over
  • 100 km trail running
  • Sat 22 Jun
Weymouth, Dorset, UK

Jurassic Coast 100K Ultra

  • 100 km trail running
  • Sat 29 Jun
Lyme Regis, Dorset, UK

Ham & Lyme 100K

  • 100 km trail running + 6634 ft ascent

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