50K ultra runs in South East
Find 50k ultra runs near me in South East for 2025/2026 - search by date or place, display on a map or use the advanced search to find your perfect race.
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Click an event for full event details, location, route, sustainability, what's included and how to enter.
- Sat 21 Jun
- £80-£85
- 4 charities
- Sat 21 Jun
- £80-£85
- 4 charities
Race to the King | Coastal 50K
A coastal trail ultra through the ancient village of Bosham towards Chichester Harbour with panoramic views of this AONB, to finish at the fantastic basecamp with food and bars.
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 50 km trail running + 1885 ft ascent
- Sat 21 Jun
- £80-£85
- 3 charities
- Sat 21 Jun
- £80-£85
- 3 charities
Race to the King | Castle 50K
Head through the historic town of Arundel and witness the impressive Arundel Castle as you meander along the River Arun, across the South Downs in breathtaking surroundings.
- Chip timing
- Enter online
- GPS tracking
- Hilly
- Age 18 & over
- 50 km trail running + 2663 ft ascent
- Sat 12 Jul
- £139
- 6 charities
- Sat 12 Jul
- £139
- 6 charities
North Downs 50 Ultra Challenge | 50km
Join a mid-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.
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 50 km trail running + 830 m ascent
- Sat 12 Jul
- £85-£180
- 6 charities
- Sat 12 Jul
- £85-£180
- 6 charities
Race to the Stones | Day One | Thames Valley 50K
Starting in Lewknor, this event presents a varied and scenic route steeped in history. Crossing England’s longest river at the halfway mark, the course finishes at the iconic Lattin Down basecamp.
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 50 km trail running + 710 m ascent
- Sun 13 Jul
- £85-£180
- 6 charities
- Sun 13 Jul
- £85-£180
- 6 charities
Race to the Stones | Day Two | Ridgeline 50K
Sticking to higher ground, you'll pass through a surprisingly isolated stretch of southern England and enjoy dramatic views before finishing with the full 100K at the awesome Avebury Standing Stones.
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 50 km trail running + 630 m ascent
- Sat 13 Sep
- £60-£62
- Sat 13 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.
- Chip timing
- Enter online
- Hilly
- Age 20-80
- 50 km trail running
- Sat 13 - Sun 14 Sep
- £139
- 18 charities
- Sat 13 - Sun 14 Sep
- £139
- 18 charities
Thames Path Ultra Challenge | 2nd Half
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 18 & over
- 50 km trail running + 150 m ascent
- Sat 27 Sep
- £139
- 13 charities
- Sat 27 Sep
- £139
- 13 charities
Chiltern 50 Ultra Challenge | Full 50km
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!
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 50 km trail running + 920 m ascent
- Sat 11 Oct
- £139
- 6 charities
- Sat 11 Oct
- £139
- 6 charities
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.
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 16 & over
- 50 km trail running + 1000 m ascent
- Sat 4 Oct
London South East Spartan Trifecta Weekend | Ultra 50K - Saturday
- 50 km multi terrain running