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50K ultra runs in East of England

Find 50k ultra runs in East of England in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Can you survive Farmmageddon? Run an ultra over a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
  • Sat 23 May
  • £33-£38
Buntingford, Hertfordshire, UK

Farmmageddon | Ultra Marathon

Can you survive Farmmageddon? Run an ultra over a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.

  • 32 miles trail running
  • Enter online
  • Undulating
  • Traffic free
  • Age 18 & over
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
  • £36-£38
Ware, Hertfordshire, UK

Circuit Du Sore Legs | Ultra Marathon

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?

  • 50 km track and field
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 18 & over
  • Sat 7 Mar
  • £65
Bedford, Bedfordshire, UK

Harrold-Odell Country Park Trail Run | 50K

  • 50 km trail running
  • Sat 21 Mar
  • £57-£59
Welwyn Garden City, Hertfordshire, UK

London Lea Valley Ultra

  • 50 km road running
  • Sat 18 Apr
  • £68-£70
Berkhamsted, Hertfordshire, UK

Chiltern Ridge Classic 50K

  • 50 km trail running
  • Sun 19 Jul
  • £23-£25
Stevenage, Hertfordshire, UK

Fairlands Valley Challenge | 50K Ultra

  • 50 km trail running
  • Sat 31 Oct
  • £73-£75
Berkhamsted, Hertfordshire, UK

Chiltern Ridge Winter 50K

  • 50 km trail running + 800 m ascent

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