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Flat Half marathons in September 2026
Find flat half marathons near me in September 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 6 Sep 2026
- £56.50-£59.99
- 4 charities
London, UK
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, UK
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