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Flat 50K ultra runs in South East in Autumn

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

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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 + 150 m ascent
Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence and a run of your choice from 3K to ultra.
  • Sun 8 Nov 2026
  • £20-£37
Egham, Surrey, UK

Remembrance Day Run | South

Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence and a run of your choice from 3K to ultra.

  • Families
  • Beginner-friendly
  • Event village
  • All ages
  • Trail run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races

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