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100K ultra runs in UK in July 2026

Find 100k ultra runs in UK 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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From the idyllic basecamp hub in Bakewell, charity challengers will head into the fabulous Peak District National Park on a route from 10 miles right up to the full 100km with full support!
  • Sat 4 - Sun 5 Jul
  • £49-£199
Bakewell, Derbyshire, UK

Peak District Ultra Challenge

From the idyllic basecamp hub in Bakewell, charity challengers will head into the fabulous Peak District National Park on a route from 10 miles right up to the full 100km with full support!

  • Ultra run 3
  • 100K ultra run 2
  • Trail run 2
  • Families
  • Beginner-friendly
  • Entertainment
  • Music
  • Event village
  • Rural
  • Age 14 & over
Travel across the Ridgeway, the UK’s oldest footpath, pass through ancient landscapes, and end at the iconic Avebury Standing Stones. This is a journey on foot through 5,000 years of history.
  • Sat 11 - Sun 12 Jul
  • £90-£275
Watlington, Oxfordshire, UK

Race to the Stones

Travel across the Ridgeway, the UK’s oldest footpath, pass through ancient landscapes, and end at the iconic Avebury Standing Stones. This is a journey on foot through 5,000 years of history.

  • 50K ultra run 2
  • 100K ultra run 3
  • Families
  • Recycling
  • Beginner-friendly
  • Event village
  • Rural
  • Sustainability policy
  • Public transport links
  • Age 18 & over
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.

  • 24 hrs trail running + 3182 ft ascent
  • Chip timing
  • Enter online
  • Mountainous
  • Traffic free
  • Relay
  • Age 18 & over
Set on the stunning Gower Peninsula, the UK’s first Area of Outstanding Natural Beauty and famous for its golden beaches, limestone cliffs, wild moors, ridges and woodlands.
  • Sat 18 - Sun 19 Jul
  • £49-£199
Swansea, West Glamorgan, UK

Gower Peninsula Ultra Challenge

Set on the stunning Gower Peninsula, the UK’s first Area of Outstanding Natural Beauty and famous for its golden beaches, limestone cliffs, wild moors, ridges and woodlands.

  • 100K ultra run 2
  • Ultra run
  • 50K ultra run 2
  • Marathon
  • Multi-terrain run
  • + 1 more race
  • Beginner-friendly
  • Entertainment
  • Event village
  • Rural
  • Age 8 & over
  • Fri 3 - Sat 4 Jul
  • £103-£105
Epping, Essex, UK

The Full Essex Way Ultra

  • 82 miles trail running + 3469 ft ascent

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