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100K ultra runs in UK in Autumn

Find 100k ultra runs in UK 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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A hilly and challenging route showcasing the best of the Peak District for those who can maintain 4kph over 24 hours. Night navigation experience is essential.
  • Fri 18 Sep
  • From £86
Hope Valley, Derbyshire, UK

Peak District Challenge | Gold Ultra 100K

A hilly and challenging route showcasing the best of the Peak District for those who can maintain 4kph over 24 hours. Night navigation experience is essential.

  • 100 km trail running + 3300 m ascent
  • Enter online
  • GPS tracking
  • Hilly
  • Age 20 & over
A runnable 100km with a Scottish Highland journey at the heart of the race experience with an exciting midnight mass start.
  • Sat 19 - Sun 20 Sep
  • £140-£200
Fort William, Highland, UK

Skyline Scotland | Skyline Scotland 100K

A runnable 100km with a Scottish Highland journey at the heart of the race experience with an exciting midnight mass start.

  • 106 km trail running + 6350 m ascent
  • Enter online
  • GPS tracking
  • Mountainous
  • Age 18 & over
  • Mon 7 - Sat 12 Sep
Conwy, Clwyd, UK

Dragon’s Back Race

  • 6 days fell running
  • Fri 11 - Sun 13 Sep
London, UK

Thames Path Ultra Challenge

  • 100K ultra run 2
  • 50K ultra run 2
  • Trail run 4
  • Ultra run
  • 10K run
  • + 4 more races
  • Sat 12 Sep
Bradford, West Yorkshire, UK

Leeds Country Way In A Day 100K

  • 100K ultra run 2
  • Sat 3 Oct
Wadebridge, Cornwall, UK

Cornwall's Backyard Ultra

  • 4.17 miles multi terrain running

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