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Trail Ultra runs in Hertfordshire

Find trail ultra runs in Hertfordshire 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? You have 32 hours to complete 100 miles over a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm. 24-hour or shorter distance options too.
  • Sat 23 - Sun 24 May
  • £33-£165
Buntingford, Hertfordshire

Farmmageddon

Can you survive Farmmageddon? You have 32 hours to complete 100 miles over a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm. 24-hour or shorter distance options too.

  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • Ultra run 2
  • + 2 more races
  • Beginner-friendly
  • Event village
  • Rural
  • Age 18 & over
Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it over a lovely looped ultra trail route.
  • Sat 27 Jun
  • £33-£38
Buntingford, Hertfordshire

Cock-a-doodle Dawdle | Ultra Marathon

Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it over a lovely looped ultra trail route.

  • 32 miles trail running
  • Enter online
  • Undulating
  • Age 18 & over
A stunningly pretty 30-mile out-and-back ultra on the border of Hertfordshire and Essex along the River Stort and Lee navigation. A great first foray into ultra running or a fast competitive race.
  • Sun 25 Oct
  • £35-£55
Bishop's Stortford, Essex

Stort30

A stunningly pretty 30-mile out-and-back ultra on the border of Hertfordshire and Essex along the River Stort and Lee navigation. A great first foray into ultra running or a fast competitive race.

  • 30 miles trail running + 188 ft ascent
  • Beginner-friendly
  • Chip timing
  • Enter online
  • Flat
  • Event village
  • Rural
  • Age 18 & over
Come join a Halloween Party of a different kind
  • Sat 31 Oct
  • £63-£65
Ware, Hertfordshire

Halloween Hobble | 50 Miles

Come join a Halloween Party of a different kind

  • 50 miles track and field
  • Chip timing
  • Enter online
  • PB
  • Traffic free
  • Age 21 & over
  • Sat 18 Apr
  • £68-£70
Berkhamsted, Hertfordshire

Chiltern Ridge Classic 50K

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

Fairlands Valley Challenge | 50K Ultra

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

Chiltern Ridge Winter 50K

  • 50 km trail running + 800 m ascent
  • Fri 13 - Sun 15 Nov
  • £209-£269
Tring, Hertfordshire

The Druids Challenge

  • 3 days trail running

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