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50K ultra runs in UK in September 2026

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

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A demanding 50km ultra through Yorkshire’s wildest trails, built to test endurance and resilience while rewarding runners with epic scenery, big climbs and a powerful sense of achievement.
  • Sat 5 Sep
  • £65-£67
Huddersfield, West Yorkshire

Heights Ultra Trail | The Ramsden 50K

A demanding 50km ultra through Yorkshire’s wildest trails, built to test endurance and resilience while rewarding runners with epic scenery, big climbs and a powerful sense of achievement.

  • 50 km trail running + 3901 ft ascent
  • Chip timing
  • Enter online
  • Hilly
  • Age 21 & over
England’s greatest river provides a fantastic backdrop for an unforgettable 'festival' challenge weekend, with distances from 10km right up to 100km there’s a Thames Challenge for everyone!
  • Fri 11 - Sun 13 Sep
  • £39-£199
London

Thames Path Ultra Challenge

England’s greatest river provides a fantastic backdrop for an unforgettable 'festival' challenge weekend, with distances from 10km right up to 100km there’s a Thames Challenge for everyone!

  • 100K ultra run 2
  • 50K ultra run 2
  • Trail run 4
  • Ultra run
  • 10K run
  • + 4 more races
  • Families
  • Beginner-friendly
  • Entertainment
  • Music
  • Event village
  • Urban
  • Rural
  • Age 14 & over
Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon course was previously rated one of the top UK marathons.
  • Sat 12 Sep
  • £60-£62
Wadhurst, East Sussex

Bewl Water Autumn | Ultra

Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon course was previously rated one of the top UK marathons.

  • 50 km trail running + 1500 ft ascent
  • Chip timing
  • Enter online
  • Hilly
  • Age 20-80
From rolling hills to woodland paths, this is an opportunity to test endurance, build trail confidence and enjoy a professionally supported experience designed for runners and walkers alike.
  • Sun 13 Sep
  • FREE-£110
Hope Valley, Derbyshire

Ultra X England | 50K

From rolling hills to woodland paths, this is an opportunity to test endurance, build trail confidence and enjoy a professionally supported experience designed for runners and walkers alike.

  • 50 km multi terrain running + 1961 m ascent
  • Enter online
  • Age 18 & over
Take in the valleys of the dark peak and the scenic trails of the white peak and reach the highest point at 464m, with a 12-hour target time which is generous for runners and a brisk pace for hikers.
  • Sat 19 Sep
  • From £66
Hope Valley, Derbyshire

Peak District Challenge | Bronze Challenge 50K

Take in the valleys of the dark peak and the scenic trails of the white peak and reach the highest point at 464m, with a 12-hour target time which is generous for runners and a brisk pace for hikers.

  • 50 km trail running + 1140 m ascent
  • Enter online
  • GPS tracking
  • Hilly
  • Age 16 & over
The full 50K route of the Chiltern 50 Ultra Challenge starts from basecamp in Henley on a loop via Greys Court, the Ridgeway, Shakespeare's Way, The Chilterns and Hambleden Village to a party finish!
  • Sat 26 Sep
  • £139
Henley-on-Thames, Buckinghamshire

Chiltern 50 Ultra Challenge | Full 50km Challenge

The full 50K route of the Chiltern 50 Ultra Challenge starts from basecamp in Henley on a loop via Greys Court, the Ridgeway, Shakespeare's Way, The Chilterns and Hambleden Village to a party finish!

  • 50 km trail running + 920 m ascent
  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 16 & over
  • Sun 13 Sep
  • £55.80-£64
Northampton, Northamptonshire

TrailFest - Holdenby House | 50K

  • 50 km trail running

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