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Multi-terrain runs in May 2026

Find multi-terrain 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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Be one of 15,000 Mudders to prove you're tough enough to conquer the most technically difficult obstacle course of the series. Expect hills, forest trails, muddy ditches, hills and a finisher beer.
  • Sat 9 May 2026
  • Sat 9 May 2026
Henley-on-Thames, Buckinghamshire, UK

Tough Mudder London West | 15K - Saturday

Secure your charity place in Tough Mudder London West 15K Saturday today. Run for charity in a muddy obstacle course while supporting top UK charities. Find a cause and join their team today!

  • Enter online
  • Hilly
  • Traffic free
  • Age 14 & over
  • 15 km multi terrain running
Be one of 15,000 Mudders to prove you're tough enough to conquer the most technically difficult obstacle course of the series. Expect hills, forest trails, muddy ditches, hills and a finisher beer.
  • Sat 9 May 2026
  • Sat 9 May 2026
Henley-on-Thames, Buckinghamshire, UK

Tough Mudder London West | 5K - Saturday

Secure your charity place in Tough Mudder London West 5K Saturday today. Run for charity in a muddy obstacle course while supporting top UK charities. Find a cause and join their team today!

  • Enter online
  • Hilly
  • Traffic free
  • Age 14 & over
  • 5 km multi terrain running
The finish line is unique to you: 24 hours after the mass start, the race shall stop and the Solo Runners and Teams furthest South on the National Trail, shall be declared winners.
  • Sat 9 - Sun 10 May 2026
  • £95.50-£155.50
  • Sat 9 - Sun 10 May 2026
  • £95.50-£155.50
Prestatyn, Clwyd, UK

24 Hours South | The Offa's Dyke Ultra

The finish line is unique to you: 24 hours after the mass start, the race shall stop and the Solo Runners and Teams furthest South on the National Trail, shall be declared winners.

  • Newcomers
  • Chip timing
  • Enter online
  • GPS tracking
  • Event village
  • Rural
  • Age 18 & over
  • 24 hrs trail running + 8561 ft ascent
The multi-terrain half marathon is mostly on road and covers a section of the longer distance routes.
  • Sun 10 May 2026
  • £35
  • Sun 10 May 2026
  • £35
Naseby, Northamptonshire, UK

Shires and Spires | Half Marathon

The multi-terrain half marathon is mostly on road and covers a section of the longer distance routes.

  • Chip timing
  • Enter online
  • Undulating
  • Age 18 & over
  • 13.4 miles multi terrain running + 897 ft ascent
The multi-terrain marathon is 12.9 miles on road and 13.7 miles of trails and covers a large part of the ultra distance route.
  • Sun 10 May 2026
  • £45
  • Sun 10 May 2026
  • £45
Naseby, Northamptonshire, UK

Shires and Spires | Marathon

The multi-terrain marathon is 12.9 miles on road and 13.7 miles of trails and covers a large part of the ultra distance route.

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 26.6 miles multi terrain running + 1743 ft ascent
The multi-terrain 3/4 marathon is 11.1 miles on road and 8 miles of trails and covers a section of the longer distance routes through beautiful Northamptonshire countryside.
  • Sun 10 May 2026
  • £40
  • Sun 10 May 2026
  • £40
Naseby, Northamptonshire, UK

Shires and Spires | Three Quarter Marathon

The multi-terrain 3/4 marathon is 11.1 miles on road and 8 miles of trails and covers a section of the longer distance routes through beautiful Northamptonshire countryside.

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 19.1 miles trail running + 1334 ft ascent
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
Be one of 15,000 Mudders to prove you're tough enough to conquer the most technically difficult obstacle course of the series. Expect hills, forest trails, muddy ditches, hills and a finisher beer.
  • Sun 10 May 2026
  • Sun 10 May 2026
Henley-on-Thames, Buckinghamshire, UK

Tough Mudder London West | 15K - Sunday

Secure your charity place in Tough Mudder London West 15K Sunday today. Run for charity in a muddy obstacle course while supporting top UK charities. Find a cause and join their team today!

  • Enter online
  • Hilly
  • Traffic free
  • Fundraising optional
  • Age 14 & over
  • 15 km multi terrain running
Be one of 15,000 Mudders to prove you're tough enough to conquer the most technically difficult obstacle course of the series. Expect hills, forest trails, muddy ditches, hills and a finisher beer.
  • Sun 10 May 2026
  • Sun 10 May 2026
Henley-on-Thames, Buckinghamshire, UK

Tough Mudder London West | 5K - Sunday

Secure your charity place in Tough Mudder London West 5K Sunday today. Run for charity in a muddy obstacle course while supporting top UK charities. Find a cause and join their team today!

  • Enter online
  • Hilly
  • Traffic free
  • Fundraising optional
  • Age 14 & over
  • 5 km multi terrain running
  • Sat 9 May 2026
Henley-on-Thames, Buckinghamshire, UK

Tough Mudder London West | Tough Mudder Infinity

  • 8 hrs multi terrain running
  • Sun 17 May 2026
Chester, Cheshire, UK

Essar Chester Fun Run

  • 1 mile road running

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