Flat Half marathons in South East
Find flat half marathons in South East in 2026/2027 - 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 14 Jun
- £23-£35
Labyrinth 40th Anniversary Run | Half Marathon
Come and celebrate the 40th anniversary of the iconic film released in 1986! A cult classic from the 80s, one of Charlotte's favourite films, and who doesn't love David Bowie as the Goblin King!
- Enter online
- Flat
- Traffic free
- Age 17 & over
- 13.1 miles road running
- Sun 5 Jul
- £16-£35
Will Run For Ice Cream
A run that you don't want to miss! The medal is incredible, and you can celebrate your achievements with some well-deserved ice cream!
- Families
- Beginner-friendly
- Event village
- All ages
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 11 Jul
- £16-£35
Ooops I Ran It Again
Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!
- Families
- Beginner-friendly
- Event village
- All ages
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 9 Aug
- £23-£35
Great British Bake Run | Half Marathon
Who doesn't like cake?! The Great British Bake Half Marathon Run is back for another year! The medal is a fantastic cupcake which doubles up as a magnet to go on your fridge!
- Enter online
- Flat
- Traffic free
- Age 17 & over
- 13.1 miles road running
- Sun 27 Sep
- £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 11 Oct
- £15-£130
- 7 charities
Oxford Half Marathon
Runners will enjoy the fast, flat and beautiful route through University Parks and the historic Oxford City Centre whilst celebrating running and movement with entertainment and cheering fans!
- Carbon neutral
- Venue accessible
- Recycling
- Beginner-friendly
- Entertainment
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Fancy dress
- Event village
- Urban
- Park
- Sustainability policy
- Public transport links
- Age 16 & over
- 13.1 miles road running
- Sun 25 Oct
- £37.50-£39.50
Wight Lines
Enjoy stunning coastal views on this flexible-distance run at Milford on Sea, following an out-and-back route beside Sturt Pond and the Isle of Wight — perfect for all abilities.
- Beginner-friendly
- Enter online
- Flat
- Event village
- Coast
- Public transport links
- Age 18 & over
- 7 hrs trail running + 47 ft ascent
- Sun 8 Nov
- £25-£37
Remembrance Day Run | South | Half Marathon
Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence, a half marathon, then a Remembrance medal, goody bag and special pin.
- Enter online
- Flat
- Age 17 & over
- 13.1 miles trail running
- Sun 8 Feb
Farnborough Winter Half Marathon | Half Marathon
- 13.1 miles road running + 393 ft ascent
- Sun 22 Feb
David Cliff Wokingham Half Marathon | Half Marathon
- 13.1 miles road running
- Sun 15 Mar
Milton Keynes Festival of Running | Half Marathon
- 13.1 miles road running
- Sun 22 Mar
Run Whitstable & Herne Bay Spring 5K, 10K and Half Marathon | Half Marathon
- 13.1 miles road running
- Sun 22 Mar
Twin Lakes 20 | 20 Mile
- 20 miles multi terrain running
- Sat 9 May
The All Nations 5K, 10K and Half Marathon Run | Half Marathon
- 13.1 miles road running
- Sat 23 May
Seven Sisters Half Marathon
- 13.1 miles trail running + 2057 ft ascent
- Sun 13 Sep
The Garmin New Forest Marathon | Half Marathon
- 13.1 miles multi terrain running + 150 ft ascent
- Sun 25 Oct
Windsor Dorney Lakeside Half Marathon
- 13.1 miles road running