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Trail Half marathons in London

Find trail half marathons in London in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, London!
  • Sat 29 Nov
  • £35
Richmond, UK

London Richmond Riverside MoRun | Half Marathon

MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, London!

  • Chip timing
  • Enter online
  • Flat
  • Age 17 & over
  • 13.1 miles trail running + 40 m ascent
Stunningly scenic riverside route along the Thames towpath. Flat, fast and very runnable with great runner support. The marathon on the same day was previously rated one of the top 10 UK marathons.
  • Sun 8 Mar 2026
  • £43-£45
London, UK

Thames Meander Spring | Half Marathon

Stunningly scenic riverside route along the Thames towpath. Flat, fast and very runnable with great runner support. The marathon on the same day was previously rated one of the top 10 UK marathons.

  • Chip timing
  • Enter online
  • Flat
  • Age 17 & over
  • 13.1 miles trail running + 300 ft ascent
  • Sun 30 Nov
Richmond, UK

The One in the Park | Richmond | Half Marathon

  • 13.1 miles trail running
  • Sun 14 Dec
Richmond, UK

Richmond Park December 5K, 10K and Half Marathon | Half Marathon

  • 13.1 miles multi terrain running
  • Sun 15 Mar 2026
Richmond, UK

The Richmond Spring Riverside 10K and Half Marathon Run | Half Marathon

  • 13.1 miles trail running
  • Thu 30 Apr - Sun 3 May 2026
London, UK

Run2Paris

  • 4 days multi terrain running
  • Thu 10 - Sun 13 Sep 2026
London, UK

Run2Paris

  • 4 days multi terrain running

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