Flat Half marathons in London in March 2026
Find flat half 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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- Sun 8 Mar 2026
- £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.
- Chip timing
- Enter online
- Flat
- Age 17 & over
- 13.1 miles trail running + 300 ft ascent
- Sun 15 Mar 2026
- £20-£57
- 7 charities
Hampton Court Palace Half Marathon
Experience an unforgettable half marathon through the regal grounds of Hampton Court Palace.
- Recycling
- Newcomers
- Chip timing
- Enter online
- Flat
- Event village
- Urban
- Park
- Rural
- Free venue entry
- Sustainability policy
- Public transport links
- Age 17 & over
- 13.1 miles multi terrain running
- Sun 29 Mar 2026
- £43-£50
- 4 charities
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!
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Age 17 & over
- 13.1 miles road running + 85 m ascent
- Sun 29 Mar 2026
- £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.
- Newcomers
- Chip timing
- Enter online
- Flat
- PB
- Event village
- Park
- Age 18 & over
- 13.1 miles road running
- Sun 1 Mar 2026
London Half and 10K Presented by TREK | Half Marathon
- 21.1 km road running + 117 m ascent
- Sun 15 Mar 2026
The Richmond Spring Riverside 10K and Half Marathon Run | Half Marathon
- 13.1 miles trail running
- Sun 15 Mar 2026
Hackney Legacy Half Marathon and Legacy Mile | Half Marathon
- 13.1 miles road running