Trail 5K runs in UK in December 2025
Find trail 5k runs in UK 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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Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sat 13 Dec
- £14-£16
Crikey its the Christmas Cracker | Day 1 | 5K
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 16 & over
- 5 km trail running
- Sun 14 Dec
- £14-£16
Crikey its the Christmas Cracker | Day 2 | 5K
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 16 & over
- 5 km trail running + 59 ft ascent
- Sun 14 Dec
- £22-£32
A Christmas Carol Bobble Hat Run | North | 5K
Come and join the day of running and aim to complete a 5K at your own pace on a scenic course then receive a bobble hat, themed medal and goody bag at the finish!
- Enter online
- Age 12 & over
- 5 km trail running
- Sun 14 Dec
- £31-£33
Twas The Run Before Christmas | 4 Hour
Run as far as you can during the 4-hour event through Brandon Country Park in the very heart of Thetford Forest on a multi-terrain loop. Run, rest, head out for more and enjoy some festive fun!
- Chip timing
- Enter online
- Undulating
- Traffic free
- Age 18 & over
- 4 hrs multi terrain running + 299 ft ascent
- Sat 20 Dec
- £20-£22
Rumble In The Jumble II | 5K
Welcome to a 6-hour timed running event where you can run a 5K all the way up to an ultra marathon on an out-and-back route within the time limit, with fuel stations, pick-and-mix medal and goody bag.
- Enter online
- Age 12 & over
- 5 km trail running + 33 ft ascent
- Sat 20 Dec
- £9
Santa Run Wales | 5K
Get your Santa suits, reindeer antlers, and elf ears ready — Christmas is coming, and so is the most magical 5K fun run of the year!
- Enter online
- Traffic free
- All ages
- 5 km trail running
- Thu 25 Dec
- £23-£27
Christmas Day Cracker Run | 5K
Come and join the morning of running and aim to complete a 5K at your own pace on a scenic course then receive a Christmas present, themed medal and goody bag at the finish!
- Enter online
- Traffic free
- Age 12 & over
- 5 km trail running + 0 ft ascent
- Fri 26 Dec
- £16-£18
Boxing Day Challenge | 5K
Come and join the day of running and aim to complete a 5K 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
- PB
- Traffic free
- Age 12 & over
- 5 km trail running + 0 ft ascent
- Sat 27 Dec
- £23-£27
Year End Time Turner | 5K
Come and join the day of running and aim to complete a 5K at your own pace on a scenic course then receive a fantastic pick and mix medal and goody bag at the finish!
- Enter online
- Age 12 & over
- 5 km trail running + 0 ft ascent
- Wed 31 Dec
- £16-£18
River Thames Run | 5K
Come and join the day of running and aim to complete a 5K at your own pace on an out-and-back route along the River Thames then receive a medal and goody bag at the finish!
- Enter online
- Traffic free
- Age 12 & over
- 5 km trail running + 0 ft ascent
- Sat 13 Dec
Fox Trail Winter Running Series | Race 2 | 5K
- 5 km trail running
- Sat 13 Dec
ACTI-SNACK Run Forest Run Series - Tollymore | 5K
- 5 km trail running + 370 ft ascent
- Sun 14 Dec
Christmas Day for Runners | Great Sprout Scuttle 5K
- 5 km trail running
- Sun 14 Dec
Richmond Park December 5K, 10K and Half Marathon | 5K
- 5 km multi terrain running