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Road Marathons in London in March 2026

Find road marathons in London in March 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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The Hillingdon 20, (formerly the Finchley 20), is the longest-running 20-mile race in the UK. A hilly 20 mile road race, an ideal build-up to the London or other spring marathons.
  • Sun 22 Mar
  • £32-£34
Ruislip, UK

Hillingdon 20

The Hillingdon 20, (formerly the Finchley 20), is the longest-running 20-mile race in the UK. A hilly 20 mile road race, an ideal build-up to the London or other spring marathons.

  • 20 miles road running + 738 ft ascent
  • Beginner-friendly
  • Chip timing
  • Enter online
  • Hilly
  • Event village
  • Age 18 & over

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