50K ultra runs in South East
Find 50k ultra runs in South East in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sun 7 Jun 2026
- £23-£35
The Summer Lucky Dip Run | 50K
Come and join the Summer Lucky Dip Run! There is no set medal for this race, instead, you will get to choose your own from a selection of medals from past events!
- Enter online
- Flat
- Traffic free
- Age 20 & over
- 50 km road running
- Sat 13 Jun 2026
- £60-£62
Bewl Water Summer | Ultra
Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon on the same day was previously rated one of the top UK marathons.
- Chip timing
- Enter online
- Hilly
- Age 20-80
- 50 km trail running + 1500 ft ascent
- Sun 14 Jun 2026
- £23-£35
Labyrinth 40th Anniversary Run | 50K
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 20 & over
- 50 km road running
- Sun 5 Jul 2026
- £23-£35
Will Run For Ice Cream | 50K
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!
- Enter online
- Flat
- Traffic free
- Age 20 & over
- 50 km road running
- Sat 11 Jul 2026
- £23-£35
Ooops I Ran It Again | 50K
Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!
- Enter online
- Flat
- Traffic free
- Age 20 & over
- 50 km road running
- Sun 9 Aug 2026
- £23-£35
Great British Bake Run | 50K
Who doesn't like cake?! The Great British Bake 50K 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 20 & over
- 50 km road running
- Sat 12 Sep 2026
- £60-£62
Bewl Water Autumn | Ultra
Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon course was previously rated one of the top UK marathons.
- Chip timing
- Enter online
- Hilly
- Age 20-80
- 50 km trail running + 1500 ft ascent
- Sat 12 - Sun 13 Sep 2026
- £139
- 12 charities
Thames Path Ultra Challenge | 2nd Half Challenge 50K
The second half option of the Thames Path Challenge from Runnymede along the meandering river through Cookham to Henley-on-Thames, home of the regatta, to a celebration finish and family BBQ!
- Chip timing
- Enter online
- GPS tracking
- Flat
- Age 16 & over
- 50 km trail running + 150 m ascent
- Sun 8 Nov 2026
- £20-£37
Remembrance Day Run | South
Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence and a run of your choice from 3K to ultra.
- Families
- Beginner-friendly
- Event village
- All ages
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Fri 29 May 2026
Midweek Medal Madness | Leons Birthday Run | 50K
- 50 km road running
- Sat 20 Jun 2026
Race to the King
- 50K ultra run 2
- 100K ultra run
- Trail run
- Ultra run
- Sat 11 - Sun 12 Jul 2026
Race to the Stones
- 50K ultra run 2
- 100K ultra run 3