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50K ultra runs in South East in September 2025

Find 50k ultra runs near me in South East in September 2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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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 13 Sep 2025
  • £58-£60
  • Sat 13 Sep 2025
  • £58-£60
Wadhurst, East Sussex, UK

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.

  • Chip timing
  • Enter online
  • Hilly
  • Age 20 & over
  • 50 km trail running
The second half option of the Thames Path Challenge from Runnymede along the meandering river through Cookham to Henley-on-Thames, home of the regatta, to a celebration finish and family BBQ.
  • Sat 13 - Sun 14 Sep 2025
  • 11 charities
  • Sat 13 - Sun 14 Sep 2025
  • 11 charities
Egham, Surrey, UK

Thames Path Challenge | 2nd Half charity places

The second half option of the Thames Path Challenge from Runnymede along the meandering river through Cookham to Henley-on-Thames, home of the regatta, to a celebration finish and family BBQ.

  • Chip timing
  • Enter online
  • GPS tracking
  • Flat
  • Undulating
  • Age 18 & over
  • 50 km trail running + 150 m ascent
The full distance option of the Chiltern 50 Challenge from basecamp in Henley on a loop via Greys Court, the Ridgeway, Shakespeare's Way, The Chilterns and Hambleden Village.
  • Sat 27 Sep 2025
  • 10 charities
  • Sat 27 Sep 2025
  • 10 charities
Henley-on-Thames, Buckinghamshire, UK

Chiltern 50 Ultra Challenge | Full 50km charity places

The full distance option of the Chiltern 50 Challenge from basecamp in Henley on a loop via Greys Court, the Ridgeway, Shakespeare's Way, The Chilterns and Hambleden Village.

  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 50 km trail running + 920 m ascent
  • Sat 27 Sep 2025
Lewes, East Sussex, UK

Dark Downs 50K Race

  • 50 km trail running

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