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100K ultra runs in South West

Find 100k ultra runs in South West 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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Walk, jog or run along the spectacular UNESCO World Heritage coastline from Corfe Castle past Lulworth Cove and Durdle Door, with full support, welcoming base camp and finish line celebration!
  • Sat 16 - Sun 17 May
  • £39-£199
Wareham, Dorset, UK

Jurassic Coast Ultra Challenge

Walk, jog or run along the spectacular UNESCO World Heritage coastline from Corfe Castle past Lulworth Cove and Durdle Door, with full support, welcoming base camp and finish line celebration!

  • Trail run 2
  • 50K ultra run 2
  • 100K ultra run 2
  • Marathon
  • Ultra run
  • + 1 more race
  • Families
  • Beginner-friendly
  • Entertainment
  • Music
  • Event village
  • Rural
  • Coast
  • Age 14 & over
Challenge yourself in the rolling hills of the Cotswolds featuring the Cotswold Way itself, villages, footpaths and trails with fabulous views on route plus full support and hospitality.
  • Sat 13 - Sun 14 Jun
  • £39-£199
Cirencester, Gloucestershire, UK

Cotswold Way Ultra Challenge

Challenge yourself in the rolling hills of the Cotswolds featuring the Cotswold Way itself, villages, footpaths and trails with fabulous views on route plus full support and hospitality.

  • Trail run 2
  • Ultra run 4
  • 100K ultra run
  • 10K run
  • Families
  • Beginner-friendly
  • Entertainment
  • Music
  • Event village
  • Urban
  • Rural
  • Age 14 & over
  • Sat 18 Apr
  • £120
Newton Abbot, Devon, UK

Devon Coast to Coast Ultra Marathon | Devon 100K (Mid Devon and Exmoor)

  • 100 km trail running
  • Sat 20 Jun
  • £118
Weymouth, Dorset, UK

Jurassic Coast 100K Ultra

  • 100 km trail running + 2900 m ascent
  • Sat 3 Oct
  • £95
Wadebridge, Cornwall, UK

Cornwall's Backyard Ultra

  • 4.17 miles multi terrain running

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