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100 mile ultra runs in July 2026

Find 100 mile ultra runs near me in July 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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Yr Wyddfa (Snowdon) is the highest mountain in England and Wales. Your challenge is to ascend and descend as many times as possible in 24 hours - solo or as a relay team.
  • Sat 11 - Sun 12 Jul
  • £129.99-£319.99
Caernarfon, Gwynedd, UK

Black Diamond Yr Wyddfa Snowdon24

Yr Wyddfa (Snowdon) is the highest mountain in England and Wales. Your challenge is to ascend and descend as many times as possible in 24 hours - solo or as a relay team.

  • Chip timing
  • Enter online
  • Mountainous
  • Traffic free
  • Relay
  • Age 18 & over
  • 24 hrs trail running + 3182 ft ascent
The 100-mile ultra for people who don't do 100-mile ultramarathons. Walk or run from Edinburgh Castle to Glamis within 48 hours, fully supported.
  • Sat 25 Jul
  • £330
Edinburgh, UK

Rat Race 100 Ultramarathon

The 100-mile ultra for people who don't do 100-mile ultramarathons. Walk or run from Edinburgh Castle to Glamis within 48 hours, fully supported.

  • Recycling
  • Beginner-friendly
  • Enter online
  • GPS tracking
  • Hilly
  • Park
  • Rural
  • Coast
  • Sustainability policy
  • Public transport links
  • Age 18 & over
  • 100 miles trail running + 4853 ft ascent

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