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100 mile ultra runs in Europe in May 2025

Find 100 mile ultra runs near me in Europe 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
  • £163-£165
  • Sat 24 May
  • £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
Richmond, UK

Thames Path 100

  • 100 miles trail running
  • Sat 10 - Sun 11 May
Taunton, Somerset, UK

Westcountry Ultra 100 Miler

  • 100 miles trail running + 9538 ft ascent
  • Sat 10 May
Woodbridge, Suffolk, UK

Five Rivers Ultra | 100 Mile

  • 100 miles trail running
  • Sun 18 - Tue 20 May
Fort William, Highland, UK

Cape Wrath 100

  • 100 miles trail running
  • Sat 24 May
Bourne, Lincolnshire, UK

The Grim Reaper | 100 Miles

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

UK Ultra South Downs 100 Miles

  • 100 miles trail running
  • Sat 31 May - Sun 1 Jun
Ballycastle, County Antrim, UK

Norn Iron Ultra 100

  • 108 miles multi terrain running

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