50K ultra runs in December 2025
Find 50k ultra runs 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.
Filter by date
This week
This weekend
Next week
Next weekend
Oct
Nov
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Autumn
Winter
Spring
Summer
All dates
Filter by place
MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Fri 5 Dec
- £16-£27
The Christmas Jumper Jaunt
Join a December midweek run and wear your most over-the-top Christmas jumper if you like!
- Families
- Newcomers
- Event village
- All ages
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 6 Dec
- £16-£40
A Christmas Carol Bobble Hat Run
Come and join in Christmas Carol Bobble Hat Run, at this event you can earn yourself a bobble hat as well as one of the incredible themed medals!!
- Families
- Newcomers
- Event village
- All ages
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 14 Dec
- £22-£34
A Christmas Carol Bobble Hat Run | North
Come and join in Christmas Carol Bobble Hat Run, at this event you can earn yourself a bobble hat as well as one of the incredible themed medals!
- Families
- Newcomers
- Event village
- All ages
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 21 Dec
- £16-£40
A Christmas Carol Bobble Hat Run | Wales
Come and join in at the Christmas Carol Bobble Hat Run in the picturesque Dare Valley in Wales! At this event you can earn yourself a bobble hat as well as one of the incredible themed medals!
- Families
- Newcomers
- Event village
- Park
- All ages
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Thu 25 Dec
- £23-£35
Christmas Day Cracker Run | 50K
Come and join the morning of running and aim to complete a 50K within the 7-hour time limit on a scenic course with Christmas Dinner each lap, present, themed medal and goody bag at the finish!
- Enter online
- Traffic free
- Age 20 & over
- 50 km trail running + 0 ft ascent
- Fri 26 Dec
- £28-£30
Boxing Day Challenge | Ultra Marathon
Come and join the day of running and aim to complete an ultra 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 20 & over
- 32 miles trail running + 0 ft ascent
- Sat 27 Dec
- £23-£35
Year End Time Turner | 50K
Welcome to a 7-hour timed running event where you can run 50K within the time limit on a scenic out-and-back route, with fuel stations each lap, and a pick-and-mix medal and goody bag at the finish.
- Enter online
- Age 20 & over
- 50 km trail running + 0 ft ascent
- Wed 31 Dec
- £33-£35
River Thames Run | Ultra Marathon
Come and join the day of running and aim to complete an ultra within the 6-hour time limit 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 20 & over
- 32 miles trail running + 0 ft ascent
- Sun 7 Dec
New Forest Xmas Trails | 50K Ultra
- 50 km trail running + 1720 ft ascent
- Sun 21 Dec
Portsmouth Coastal Waterside Marathon Events | 50K Ultra
- 50 km multi terrain running