Flat Half marathons in December 2025
Find flat half marathons near me in December 2025 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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- Fri 5 Dec
- £20-£27
The Christmas Jumper Jaunt | Half Marathon
Join a December midweek half marathon and wear your most over-the-top Christmas jumper (optional) then receive a themed medal and goody bag too!
- Enter online
- Flat
- Age 17 & over
- 13.1 miles trail running + 0 ft ascent
- Sat 6 Dec
- £28-£40
A Christmas Carol Bobble Hat Run | Half Marathon
Welcome to a 7-hour timed running event where you can run a half marathon at your own pace on an out-and-back route, with fuel stations each lap, and a bobble hat, medal and goody bag at the finish.
- Enter online
- Flat
- Age 17 & over
- 13.1 miles trail running + 0 ft ascent
- Sat 13 Dec
- £28-£30
Crikey its the Christmas Cracker | Day 1 | Half Marathon
Take on this out and back course to really get in the Christmas spirit. This event isn't just about the race itself, the activities at Race HQ are bound start a jolly atmosphere!
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Age 17 & over
- 13.1 miles trail running + 144 ft ascent
- Sun 14 Dec
- £28-£30
Crikey its the Christmas Cracker | Day 2 | Half Marathon
An out and back course to really get you in the Christmas spirit with activities at Race HQ bound start a jolly atmosphere, whether you want a PB or to challenge yourself over this distance.
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Age 18 & over
- 13.1 miles trail running + 144 ft ascent
- Sun 21 Dec
- £32-£34
ATW Nottingham Holme Run | Half Marathon
Join this fantastic festive experience on a completely flat course – perfect for achieving your personal best over a certified, accurate route, with free race photo, custom medal and friendly support!
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Age 17 & over
- 13.1 miles road running + 33 ft ascent
- Fri 26 Dec
- £28-£30
Boxing Day Challenge | Half Marathon
Come and join the day of running and aim to complete a half 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!
- Enter online
- Flat
- Traffic free
- Age 17 & over
- 13.1 miles trail running + 0 ft ascent
- Sun 7 Dec
Running GP at Goodwood Motor Circuit
- 5K run
- 10K run
- Half marathon 2
- Marathon
- 50K ultra run
- Sun 7 Dec
Milton Keynes Winter Half Marathon
- 13.1 miles road running + 415 ft ascent
- Sun 21 Dec
Portsmouth Coastal Waterside Marathon Events | Festive Half Marathon
- 13.1 miles multi terrain running
- Sun 28 Dec
Year End Marathon & Half Marathon | Half Marathon
- 13.1 miles trail running