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Flat Ultra runs in UK in Spring

Find flat ultra runs in UK 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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In its sixth year! Come take on the challenge of the track at Wodson Park. Do you have it in you to complete your distance on a 400-metre athletics track?
  • Sun 31 May 2026
  • £27-£38
Ware, Hertfordshire, UK

Circuit Du Sore Legs

In its sixth year! Come take on the challenge of the track at Wodson Park. Do you have it in you to complete your distance on a 400-metre athletics track?

  • Families
  • Beginner-friendly
  • Event village
  • Park
  • Age 14 & over
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • 50K ultra run
  • + 1 more race
  • Sat 21 Mar 2026
Welwyn Garden City, Hertfordshire, UK

London Lea Valley Ultra

  • 50 km road running
  • Sun 22 Mar 2026
Sowerby Bridge, West Yorkshire, UK

Canalathon-Ultra Running Festival

  • 50K ultra run
  • 100K ultra run
  • Half marathon
  • 10K run

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