Flat Half marathons in London
Find flat half 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.
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- Sun 8 Mar
- £43-£45
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.
- 13.1 miles trail running + 300 ft ascent
- Sun 29 Mar
- FREE-£25
Kew Gardens Half Marathon
The Kew Half Marathon starts inside Kew Gardens and every runner will receive a fantastic medal, a technical running t-shirt (male and female cut) and free entry into the gardens!
- 13.1 miles road running + 85 m ascent
- Sun 29 Mar
- £29-£31
RUN Battersea Park Half Marathon Spring
Lace up your trainers and RUN Battersea Park Half which will be a scenic and energising experience on a pancake-flat course for all abilities with beautiful views of green spaces and the River Thames.
- 13.1 miles road running
- Sun 12 Apr
- £25-£67.50
London Landmarks Half Marathon
A spirited Central London run with live music, upbeat DJs, street-dancers and inspiring themes on a landmark-packed route with closed roads.
- 13.1 miles road running
- Sun 24 May
- £31-£33
RUN Victoria Park Half Marathon
Set in one of East London’s iconic green spaces, this event offers a flat, scenic half marathon route through Victoria Park alongside 5K and 10K options on the same day, ideal for all abilities.
- 13.1 miles road running
- Sun 9 Aug
- £43-£45
Thames Meander Summer | 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.
- 13.1 miles trail running + 300 ft ascent
- Sun 6 Sep
- £15-£35
The Big Half
The Big Half promises a party atmosphere on a landmark-packed, half marathon route which follows some of the famous marathon course in reverse!
- 13.1 miles road running + 218 ft ascent
- Sun 13 Sep
- £43-£50
Richmond Half Marathon
Be part of London's most exclusive event! Run through its greenest borough, exploring the beauties and history of Richmond. Start inside the Kew Gardens with a family music festival to finish!
- 13.1 miles road running + 91 ft ascent
- Sun 4 Oct
- £43-£45
Thames Meander Autumn | 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.
- 13.1 miles trail running + 300 ft ascent
- Sun 11 Oct
- £66
Royal Parks Half Marathon
Run through four of London’s most beautiful Royal Parks, past iconic landmarks and tree-lined avenues, on a stunning autumn route that combines city energy with natural splendour.
- 13.1 miles road running + 88 m ascent
- Sun 1 Mar
- £42-£54
London Half and 10K Presented by TREK | Half Marathon
- 21.1 km road running + 117 m ascent
- Sun 15 Mar
- £20-£57
Hampton Court Palace Half Marathon
- 13.1 miles multi terrain running
- Sun 15 Mar
- £30-£35
The Richmond Spring Riverside 10K and Half Marathon Run | Half Marathon
- 13.1 miles trail running
- Sun 15 Mar
- £34-£38
Hackney Legacy Half Marathon and Legacy Mile | Half Marathon
- 13.1 miles road running
- Sun 4 Oct
- £42.50-£44.50
Kingston Half Marathon
- 13.1 miles multi terrain running