Marathons in London
Find marathons in London in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
Filter by place
Filter by date
Filter by category
MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sun 8 Mar
- £53-£55
Thames Meander Spring | Marathon
Previously rated one of the top 10 UK marathons by Runners World! Stunningly scenic riverside routes along the Thames towpath. Flat, fast and very runnable with great runner support.
- 26.2 miles trail running + 600 ft ascent
- Sun 22 Mar
- £32-£34
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
- Sun 26 Apr
- £50-£100
TCS London Marathon
Experience the renowned atmosphere of the TCS London Marathon, the most popular marathon on the planet, with its grand finale on The Mall itself!
- 26.2 miles road running + 266 ft ascent
- Sun 9 Aug
- £53-£55
Thames Meander Summer | Marathon
Previously rated one of the top 10 UK marathons by Runners World! Stunningly scenic riverside routes along the Thames towpath. Flat, fast and very runnable with great runner support.
- 26.2 miles trail running + 600 ft ascent
- Sun 13 Sep
- £49.50-£56.50
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
- Sun 4 Oct
- £53-£55
Thames Meander Autumn | Marathon
Previously rated one of the top 10 UK marathons by Runners World! Stunningly scenic riverside routes along the Thames towpath. Flat, fast and very runnable with great runner support.
- 26.2 miles trail running + 600 ft ascent