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50K ultra runs in South East in September 2026

Find 50k ultra runs in South East 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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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 2026
  • £60-£62
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 20-80
  • 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 12 - Sun 13 Sep 2026
  • £139
  • 12 charities
Egham, Surrey, UK

Thames Path Ultra Challenge | 2nd Half Challenge 50K

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
  • Age 16 & over
  • 50 km trail running

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