Flat Half marathons in London
Find flat 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.
Filter by date
Filter by place
Filter by category
MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sun 16 Nov
- £29-£31
RUN Battersea Park Half Marathon
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
- 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 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 12 Apr 2026
- £67.50
- 17 charities
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.
- Families
- Wheelchair users
- Recycling
- Newcomers
- Plastic bottle free
- Entertainment
- Music
- Ballot
- Chip timing
- Enter online
- GPS tracking
- Flat
- PB
- Traffic free
- Fancy dress
- Event village
- Urban
- Sustainability policy
- Public transport links
- Age 17 & over
- 13.1 miles road running
- Sun 6 Sep 2026
- £56.50-£59.99
- 4 charities
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!
- Families
- Trees not tees
- Wheelchair users
- Recycling
- Newcomers
- Entertainment
- Music
- Chip timing
- Enter online
- GPS tracking
- Flat
- Traffic free
- Fancy dress
- Event village
- Event expo
- Urban
- Sustainability policy
- Age 17 & over
- 13.1 miles road running + 218 ft 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 11 Oct 2026
- £10-£60
Royal Parks Half Marathon
Date TBC. A stunning central London half marathon taking in four Royal Parks and some of the capital's world-famous landmarks on closed roads.
- Families
- Trees not tees
- Wheelchair users
- Recycling
- Newcomers
- Plastic bottle free
- Entertainment
- Music
- Ballot
- Chip timing
- Enter online
- GPS tracking
- Flat
- PB
- Traffic free
- Fancy dress
- Event village
- Urban
- Park
- Sustainability policy
- Public transport links
- Age 17 & over
- 13.1 miles road running + 88 m ascent
- Sun 12 Oct
The Richmond Autumn Riverside 10K and Half Marathon Run | Half Marathon
- 13.1 miles multi terrain running
- Sun 1 Mar 2026
London Half and 10K Presented by TREK | Half Marathon
- 21.1 km road running + 117 m ascent