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100K ultra runs in October 2025

Find 100k ultra runs in October 2025 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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  • Sat 4 Oct
Wadebridge, Cornwall, UK

Cornwall's Backyard Ultra

  • 4.17 miles multi terrain running
  • Fri 17 Oct
Girona, Spain

Brama Stage Run | BRAMA100K

  • 100 km trail running + 6100 m ascent
  • Sat 18 - Sun 19 Oct
Skipton, North Yorkshire, UK

Ultra Tour Yorkshire Dales (UTYD) 100K, 50K & 25K Challenge | 100K

  • 100 km trail running + 2960 m ascent
  • Sat 18 - Sun 19 Oct
High Peak, Derbyshire, UK

High Peak 70/100K Ultra | 100K

  • 100 km trail running + 1460 m ascent

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