Trail Ultra runs in South East
Find trail ultra runs 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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- Sun 10 May
- £15-£35
The Spring Lucky Dip Run
Come and join the Spring 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!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 6 - Sun 7 Jun
- £95-£110
- Team places only
Endure24 | Reading
The UK’s biggest 24-hour relay! Epic, Brutal, Relentless. Race against the clock to tackle as many laps of the stunning 8km course as you can. How far can you go in 24 hours?
- 24 hrs multi terrain running
- Fri 12 Jun
- £15-£27
Midweek Chasing Numbers June
The aim of the midweek runs is to hold events as cheaply as possible in order for people to be able to build their numbers or simply to help people achieve their own goals at an affordable price.
- 5K run
- 10K run
- Half marathon
- Marathon
- 50K ultra run
- + 3 more races
- Sat 13 Jun
- £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.
- 50 km trail running + 1500 ft ascent
- Sat 20 Jun
- £60-£185
Race to the King
Take on a challenge fit for royalty in this epic ultramarathon taking in the South coast, South Downs Way, and Monarch’s Way over your choice of distance from a 30km loop up to a non-stop 100km!
- 50K ultra run 2
- 100K ultra run
- Trail run
- Charity ultra
- Sat 20 Jun
- £68-£70
Three Shires Way Ultra
50 Mile Ultra races through the quiet rural landscapes and ancient woodlands of Buckinghamshire, Bedfordshire and Northamptonshire along the Three Shires Way.
- 50 miles trail running + 1768 ft ascent
- Fri 26 Jun
- £113-£115
Kent Backyard Ultra | Round Four: Bedgebury
Series finale on wide forest gravel through Bedgebury National Pinetum and Forest. Run a loop (a 'yard') every hour, on the hour, until only one runner remains. Miss the bell, and you're out.
- 1 day trail running
- Fri 10 Jul
- £15-£27
Midweek Chasing Numbers July
The aim of the midweek runs is to hold events as cheaply as possible in order for people to be able to build their numbers or simply to help people achieve their own goals at an affordable price.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 11 - Sun 12 Jul
- £90-£275
Race to the Stones
Travel across the Ridgeway, the UK’s oldest footpath, pass through ancient landscapes, and end at the iconic Avebury Standing Stones. This is a journey on foot through 5,000 years of history.
- 50K ultra run 2
- 100K ultra run 3
- Fri 24 Jul
- £15-£27
Midweek Medal Madness Run July
The aim of the midweek runs is to hold events as cheaply as possible in order for people to be able to build their numbers or simply to help people achieve their own goals at an affordable price.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 1 Aug
- £139
North Downs 50 Ultra Challenge | 50km
Join a summer North Downs 50 Challenge! This looped route is set in an area of outstanding natural beauty of the Surrey Hills, taking in chalk ridges and ancient woodlands.
- 50 km trail running + 830 m ascent
- Fri 14 Aug
- £15-£27
Midweek Chasing Numbers Aug
The aim of the midweek runs is to hold events as cheaply as possible in order for people to be able to build their numbers or simply to help people achieve their own goals at an affordable price.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 15 Aug
- £15-£35
I'm Not Throwing Away My Shot Run
If you're a fan of the musical Hamilton, then this is the run for you! This is an amazing Hamilton-inspired event with an incredible themed medal too.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Fri 21 Aug
- £15-£27
Midweek Medal Madness Run August
The aim of the midweek runs is to hold events as cheaply as possible in order for people to be able to build their numbers or simply to help people achieve their own goals at an affordable price.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 5 - Sun 6 Sep
- £89-£199
South Coast Ultra Challenge
The South Downs National Park is a superb backdrop for a real challenge featuring Beachy Head, the Seven Sisters and the South Downs Way with a choice of distances from 25km right up to 100km!
- 100K ultra run 2
- Ultra run 2
- Trail run
- Fri 11 - Sun 13 Sep
- £39-£199
Thames Path Ultra Challenge
England’s greatest river provides a fantastic backdrop for an unforgettable 'festival' challenge weekend, with distances from 10km right up to 100km there’s a Thames Challenge for everyone!
- 100K ultra run 2
- 50K ultra run 2
- Trail run 4
- Charity walk 4
- Ultra run
- + 1 more race
- Sat 12 Sep
- £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.
- 50 km trail running + 1500 ft ascent
- Sat 26 Sep
- £139
Chiltern 50 Ultra Challenge | Full 50km Challenge
The full 50K route of the Chiltern 50 Ultra Challenge starts from basecamp in Henley on a loop via Greys Court, the Ridgeway, Shakespeare's Way, The Chilterns and Hambleden Village to a party finish!
- 50 km trail running + 920 m ascent
- Sat 3 Oct
- £45
North Downs Way Ultra Run
Follow ancient trails on a guided run along the North Downs Way plus Box Hill, tackling rolling hills and woodland paths with expansive views across southern England’s historic long-distance route.
- 30 miles trail running
- Sat 10 Oct
- £139
Kent Downs 50 Ultra Challenge | 50km
Set in an Area of Outstanding Natural Beauty offering dramatic views, vibrant communities, a rich historic heritage, and diverse wildlife and habitats – featuring the North Downs Way National Trail.
- 50 km trail running + 1000 m ascent
- Sat 10 Oct
- £86
Fortitude Ultra | Pippingford
10 Hours • 10 Laps • You vs You. You will be awarded an event medal and coloured finisher's shirt based on your ability to complete 10 laps of the 3-mile, 4-mile or 5-mile loops in the given time.
- 10 hrs trail running + 1824 ft ascent
- Sat 24 Oct
- £72
Thames Trail Ultra
This 47-mile point-to-point along England’s longest river is one of the most popular events in the British ultra running calendar, boasting an interesting route and top runner reviews.
- 47 miles trail running + 913 ft ascent
- 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 25 Oct
- £26-£37
Running Tribe Races | Oct
A new and unique concept where you decide how many loops you feel capable of on the day from 10km up to an ultra marathon! Push yourself further or go easy.
- 1 day multi terrain running
- Sun 8 Nov
- £20-£37
Remembrance 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.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races