Flat Half marathons in Greater London
Find flat half marathons in Greater 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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- Sat 29 Nov
- £30-£35
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
- Sun 15 Mar 2026
- £20-£57
- 8 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
- £45.50-£52.50
- 2 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
- Traffic free
- Age 17 & over
- 13.1 miles road running + 85 m ascent
- Sun 13 Sep 2026
- £38-£50
- 1 charity
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!
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Age 17 & over
- 13.1 miles road running + 91 ft ascent
- Sun 12 Oct
The Richmond Autumn Riverside 10K and Half Marathon Run | Half Marathon
- 13.1 miles multi terrain running