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100K ultra runs in Spring

Find 100k ultra runs near me in Spring - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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This event gives participants the opportunity to take in a runnable, beautiful route which follows the North Walian coastline between Prestatyn and Bangor.
  • Sat 25 Apr 2026
  • £90.50
Prestatyn, Clwyd, UK

North Wales 100K

This event gives participants the opportunity to take in a runnable, beautiful route which follows the North Walian coastline between Prestatyn and Bangor.

  • Chip timing
  • Enter online
  • GPS tracking
  • Age 18 & over
  • 100 km trail running + 8000 ft ascent
  • Sun 22 Mar 2026
Sowerby Bridge, West Yorkshire, UK

Canalathon-Ultra Running Festival | 100K

  • 100 km road running + 377 m ascent
  • Sun 3 May 2026
Shipston-on-Stour, Warwickshire, UK

Tempo Trail Races | 100K Ultra

  • 100 km trail running + 6682 ft ascent
  • Sat 9 May 2026
Chesham, Buckinghamshire, UK

Chiltern Hills 100K

  • 100 km trail running

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