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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- Sat 5 Sep 2026
- £30-£32
Hip Hip Hooray it's Hornsea | Half Marathon
We all love to be beside the seaside, so why not enjoy a trail half marathon from the coast at Hornsea? You can grab yourself fish and chips and an ice cream from the front after the race.
- Chip timing
- Enter online
- Flat
- Age 17 & over
- 13.1 miles trail running + 161 ft ascent
- Sun 6 Sep 2026
- £59.99
- 12 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
- Venue accessible
- 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 6 Sep 2026
- £32-£34
Bedford Half Marathon
13.1 miles of traffic free, stunning Bedfordshire countryside followed by a festival village with live music, street food, yoga, entertainment and more at the unforgettable post-race party.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 17 & over
- 13.1 miles road running + 59 ft ascent
- Sun 13 Sep 2026
- £43-£50
- 5 charities
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
- Sat 19 Sep 2026
- £30-£32
Oktoberfest | Half Marathon
Get your Oompah vibe on and enjoy a trip up the Leeds and Liverpool Canal. A half marathon to warm the depths of your heart along the flat, even towpath - this event is perfect for all abilities.
- Chip timing
- Enter online
- Flat
- PB
- Age 17 & over
- 13.1 miles trail running + 105 ft ascent
- Sun 27 Sep 2026
- £37.50-£39.50
SoBo Series | Volume 4 | Stop me (if you think you've heard this one before)
Set along the beachfront promenade at Southbourne (SoBo), choose your own distance from 5K to ultra, along this flat, tarmacked, lapped route suitable for all abilities.
- Newcomers
- Enter online
- Flat
- Traffic free
- Event village
- Coast
- Public transport links
- Age 18 & over
- 7 hrs road running + 0 ft ascent
- Sun 27 Sep 2026
- £38-£70
- 2 charities
Robin Hood Half Marathon
One of the longest-established and most popular city centre road events in the UK! A true Nottingham favourite, it’s also the city’s biggest charity fundraising event!
- Chip timing
- Enter online
- Flat
- Undulating
- Traffic free
- Age 17 & over
- 13.1 miles road running
- Sun 27 Sep 2026
- £25-£27
Folkestone Rotary Half Marathon
This ever popular race promises amazing coastal views and a relatively flat coastal promenade run with real PB potential.
- Chip timing
- Enter online
- Flat
- PB
- Age 17 & over
- 13.1 miles road running + 469 ft ascent
- Sun 6 Sep 2026
City to Sea | Half Marathon
- 13.1 miles trail running + 2100 ft ascent
- Sun 13 Sep 2026
The Garmin New Forest Marathon | Half Marathon
- 13.1 miles multi terrain running + 150 ft ascent
- Sun 20 Sep 2026
ABP Humber Coastal Half Marathon 10K & Family Fun Run | Half Marathon
- 13.1 miles multi terrain running + 187 ft ascent