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50K ultra runs in May 2026

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

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The circular 35 mile ultra is a registered UTMB index race with 20.2 miles of cross country trails and 14.3 miles on road through wonderful countryside. Fully tracked and interactive
  • Sun 10 May 2026
  • £60
  • Sun 10 May 2026
  • £60
Naseby, Northamptonshire, UK

Shires and Spires | Ultra

The circular 35 mile ultra is a registered UTMB index race with 20.2 miles of cross country trails and 14.3 miles on road through wonderful countryside. Fully tracked and interactive

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 35 miles multi terrain running + 2052 ft ascent
The ultra is graded ‘very hard’ and one to get into your ultra running calendar if you’re looking for UTMB index runs where you can bag points. Includes Full Weekend Festival Ticket in the price!
  • Sun 17 May 2026
  • £75-£80
  • Sun 17 May 2026
  • £75-£80
Keswick, Cumbria, UK

Keswick Mountain Festival | adidas TERREX 50K Trail Ultra Marathon

The ultra is graded ‘very hard’ and one to get into your ultra running calendar if you’re looking for UTMB index runs where you can bag points. Includes Full Weekend Festival Ticket in the price!

  • Newcomers
  • Music
  • Chip timing
  • Mountainous
  • Event village
  • Age 18 & over
  • 50 km trail running + 1995 m ascent
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 2026
  • £33-£38
  • Sat 23 May 2026
  • £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.

  • Enter online
  • Undulating
  • Traffic free
  • Age 18 & over
  • 32 miles trail running + 164 ft ascent
Taking in the two Munro summits of Cairn a Chlamain and Ben Dearg along with Glen Tilt and the vast forests of Blairuachdair, the Full Tilt Ultra has it all. Are you up to the challenge?
  • Sat 30 May 2026
  • £79
  • Sat 30 May 2026
  • £79
Pitlochry, Perth and Kinross, UK

Blair Castle Trail Weekender | Full Tilt Ultra 58K

Taking in the two Munro summits of Cairn a Chlamain and Ben Dearg along with Glen Tilt and the vast forests of Blairuachdair, the Full Tilt Ultra has it all. Are you up to the challenge?

  • Chip timing
  • Enter online
  • Mountainous
  • Traffic free
  • Age 18 & over
  • 58 km trail running + 2026 m ascent
  • Sun 3 May 2026
Shipston-on-Stour, Warwickshire, UK

Tempo Trail Races | 50K Ultra

  • 50 km trail running + 3541 ft ascent

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