Flat Marathons in South East
Find flat 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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- 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?!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 9 Aug
- £16-£35
Great British Bake Run
Who doesn't like cake?! The Great British Bake Run is back for another year! The medal is a fantastic cupcake which doubles up as a magnet to go on your fridge!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- 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.
- 7 hrs trail running + 47 ft ascent
- Sun 8 Nov
- £25-£37
Remembrance Day Run | South | Marathon
Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence, a marathon, then a Remembrance medal, a goody bag and a special pin.
- 26.2 miles trail running
- Sat 26 Dec
- £33-£35
Boxing Day Challenge | Marathon
Come and join the day of running and aim to complete a marathon at your own pace on a flat, out-and-back route along the River Thames then receive a bespoke medal and goody bag at the finish!
- 26.2 miles trail running
- Sun 13 Sep
- £66-£68
The Garmin New Forest Marathon | Full Marathon
- 26.2 miles multi terrain running + 160 ft ascent
- Sun 25 Oct
- £37-£39
Windsor Dorney Lakeside Marathon
- 26.2 miles road running