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Marathons in Greater London

Find marathons in Greater London in 2026/2027 - 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
Run 'The world's most scenic marathon' through London's greenest borough including Richmond Bridge and the Tow Path. Start inside the Kew Gardens with family fun music festival to finish!
  • Sun 13 Sep
  • £49.50-£56.50
Richmond, UK

Richmond Marathon

Run 'The world's most scenic marathon' through London's greenest borough including Richmond Bridge and the Tow Path. Start inside the Kew Gardens with family fun music festival to finish!

  • 26.2 miles road running + 160 m ascent
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 18 & over
  • Sun 24 May
  • £53-£55
Richmond, UK

Richmond Park Full Marathon

  • 26.2 miles trail running
  • Sun 28 Jun
  • £39
Woodford Green, UK

SITC Summer Samosa Ultra | Marathon

  • 42.2 km road running

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