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100 mile ultra runs in UK in May 2025

Find 100 mile ultra runs near me in UK in May 2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Can you survive Farmmageddon? Held over 32-hours, runners will cover the fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm and receive a t-shirt, buckle and medal to prove it!
  • Sat 24 May 2025
  • £163-£165
  • Sat 24 May 2025
  • £163-£165
Buntingford, Hertfordshire, UK

Farmmageddon | 100 Miles

Can you survive Farmmageddon? Held over 32-hours, runners will cover the fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm and receive a t-shirt, buckle and medal to prove it!

  • Chip timing
  • Enter online
  • Undulating
  • Traffic free
  • Age 20 & over
  • 100 miles trail running
  • Sat 3 May 2025
Richmond, UK

Thames Path 100

  • 100 miles trail running
  • Sat 24 May 2025
Horndean, Hampshire, UK

UK Ultra South Downs 100 Miles

  • 100 miles trail running

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