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Trail Half marathons in South West in May 2026

Find trail half marathons in South West in May 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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By popular demand, a half marathon trail race has been added to the multi-sports weekend at the scenic Roadford Lake, with an inclusive and encouraging atmosphere, and lakeside camping.
  • Sat 16 May 2026
  • £28
Lifton, Devon, UK

Roadford Lake Trail Races | Half Marathon

By popular demand, a half marathon trail race has been added to the multi-sports weekend at the scenic Roadford Lake, with an inclusive and encouraging atmosphere, and lakeside camping.

  • Chip timing
  • Enter online
  • Age 15 & over
  • 13.1 miles trail running + 1298 ft ascent
  • Sat 9 May 2026
Sidmouth, Devon, UK

Sid Valley Ring Half and Third Marathon | Half Marathon

  • 21.1 km trail running + 596 m ascent
  • Sat 16 May 2026
Plymouth, Devon, UK

Race The Tide | Long Half-Marathon

  • 15 miles trail running
  • Sat 30 May 2026
Saint Agnes, Cornwall, UK

Trail Pursuit: Cornwall | Half Marathon

  • 13.1 miles trail running

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