Multi-terrain runs in South East
Find multi-terrain 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 10 May
- Sat 10 May
Tough Mudder London West | 5K - Saturday
Be one of 15,000 Mudders to prove you're tough enough to conquer the most technically difficult obstacle course of the series. Expect hills, forest trails, muddy ditches, hills and a finisher beer.
- Enter online
- Hilly
- Traffic free
- Age 14 & over
- 5 km multi terrain running

- Sun 11 May
- Sun 11 May
Tough Mudder London West | 15K - Sunday
Be one of 15,000 Mudders to prove you're tough enough to conquer the most technically difficult obstacle course of the series. Expect hills, forest trails, muddy ditches, hills and a finisher beer.
- Enter online
- Hilly
- Traffic free
- Fundraising optional
- Age 14 & over
- 15 km multi terrain running

- Sun 11 May
- Sun 11 May
Tough Mudder London West | 5K - Sunday
Be one of 15,000 Mudders to prove you're tough enough to conquer the most technically difficult obstacle course of the series. Expect hills, forest trails, muddy ditches, hills and a finisher beer.
- Enter online
- Hilly
- Traffic free
- Fundraising optional
- Age 14 & over
- 5 km multi terrain running

- Sun 25 May
- £89
- Sun 25 May
- £89
Brighton Challenge
A new 25km option – ideal if you want to explore the surrounding countryside around Brighton and sections of the South Downs Way with its fabulous views back over the Sussex countryside.
- Enter online
- Undulating
- Hilly
- Age 14 & over
- 25 km trail running + 400 m ascent

- Sat 7 - Sun 8 Jun
- £85-£120
- 4 charities
- Sat 7 - Sun 8 Jun
- £85-£120
- 4 charities
Endure24 | Reading
The UK’s favourite 24-hour trail race! Epic, Brutal, Relentless. Race against the clock to tackle as many laps of the iconic course as you can. How far can you go in 24 hours?
- Dogs allowed
- Entertainment
- Music
- Ballot
- Chip timing
- Enter online
- Event village
- Event expo
- Park
- Free venue entry
- Sustainability policy
- Age 16 & over
- 24 hrs multi terrain running

- 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
- £170-£180
- 4 charities
- Sat 21 Jun
- £170-£180
- 4 charities
Race to the King | 100K
Take on the full 100K Race to the King ultra marathon challenge in one go. Fully supported through day and night on a route combining castles and coastal scenery.
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 100 km trail running + 4619 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
- £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

- Sat 12 Jul
- £180-£190
- 8 charities
- Sat 12 Jul
- £180-£190
- 8 charities
Race to the Stones | 100K Non-stop
Take on the full 100K ultramarathon in one go. Fully supported through day and night on an incredibly scenic and historic route to finish at the 5000-year-old Avebury standing stones.
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 100 km trail running + 3704 ft ascent

- Sat 12 Jul
- £260-£270
- 6 charities
- Sat 12 Jul
- £260-£270
- 6 charities
Race to the Stones | 100K Two Days with camping
Take on the full 100K Race to the Stones ultramarathon with an overnight stop at the all-inclusive Basecamp, meaning a good nights' sleep in between the 50K stints.
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 100 km trail running + 3704 ft ascent

- Sat 12 Jul
- £170-£180
- Sat 12 Jul
- £170-£180
Race to the Stones | 100K Two Days no camping
Take on the full Race to the Stones 100K ultramarathon over two days, making your own arrangements for overnight accommodation at the halfway point (ideal if you'd prefer not to camp).
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 100 km trail running + 3704 ft 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 6 - Sun 7 Sep
- £199
- 15 charities
- Sat 6 - Sun 7 Sep
- £199
- 15 charities
South Coast Ultra Challenge | Full 100km continuous
The full distance option of the South Coast Challenge from sunny Eastbourne, over the magnificent Seven Sisters, onto Cuckmere Haven and over the South Downs all the way to historic Arundel.
- Chip timing
- Enter online
- GPS tracking
- Hilly
- Age 18 & over
- 100 km trail running + 2100 m ascent

- Sun 14 Sep
- £28-£35
- Sun 14 Sep
- £28-£35
Rye Ancient Trails 15K
A truly breathtaking multi-terrain race through the High Weald Area of Outstanding Natural Beauty in East Sussex. A race that enchants and delights at every twist and turn.
- Chip timing
- Enter online
- Undulating
- Age 16 & over
- 15 km multi terrain running

- Sun 14 Sep
- £32-£35
- Sun 14 Sep
- £32-£35
Rye Ancient Trails 30K
A truly breathtaking multi-terrain race through the High Weald Area of Outstanding Natural Beauty in East Sussex. A race that enchants and delights at every twist and turn.
- Chip timing
- Enter online
- Undulating
- Age 18 & over
- 30 km multi terrain running

- Sat 20 Sep
- 3 charities
- Sat 20 Sep
- 3 charities
Tough Mudder London South | 15K - Saturday
London South is the standout event of the series for good reason. 'Showstopper' obstacles, a diverse course, seriously muddy obstacles and a party atmosphere make it the ultimate mud party!
- Enter online
- Hilly
- Traffic free
- Fundraising optional
- Age 14 & over
- 15 km multi terrain running

- Sat 20 Sep
- 3 charities
- Sat 20 Sep
- 3 charities
Tough Mudder London South | 5K - Saturday
London South is the standout event of the series for good reason. 'Showstopper' obstacles, a diverse course, seriously muddy obstacles and a party atmosphere make it the ultimate mud party!
- Enter online
- Hilly
- Traffic free
- Fundraising optional
- Age 14 & over
- 5 km multi terrain running

- Sun 21 Sep
- 4 charities
- Sun 21 Sep
- 4 charities
Tough Mudder London South | 15K - Sunday
London South is the standout event of the series for good reason. 'Showstopper' obstacles, a diverse course, seriously muddy obstacles and a party atmosphere make it the ultimate mud party!
- Enter online
- Hilly
- Traffic free
- Fundraising optional
- Age 14 & over
- 15 km multi terrain running

- Sun 21 Sep
- 3 charities
- Sun 21 Sep
- 3 charities
Tough Mudder London South | 5K - Sunday
London South is the standout event of the series for good reason. 'Showstopper' obstacles, a diverse course, seriously muddy obstacles and a party atmosphere make it the ultimate mud party!
- Enter online
- Hilly
- Traffic free
- Fundraising optional
- Age 14 & over
- 5 km multi terrain running

- Sat 11 Oct
- £40
- Sat 11 Oct
- £40
Hever Castle Commando Obstacle Festival | 3K | Saturday
Epic mud runs, cargo climbs, tunnels, tubes, stretcher manoeuvres, river crosses, slippery slopes, dramatic drops, planks and pools over a course that recreates Royal Marines Commando training.
- Chip timing
- Enter online
- Age 7 & over
- 3 km multi terrain running

- Sat 11 Oct
- £45-£210
- Sat 11 Oct
- £45-£210
Hever Castle Commando Obstacle Festival | 6K | Saturday
Epic mud runs, cargo climbs, tunnels, tubes, stretcher manoeuvres, river crosses, slippery slopes, dramatic drops, planks and pools over a course that recreates Royal Marines Commando training.
- Chip timing
- Enter online
- Age 8 & over
- 6 km multi terrain running

- Sat 11 Oct
- £100-£120
- Sat 11 Oct
- £100-£120
Hever Castle Commando Obstacle Festival | 12K | Saturday
Epic mud runs, cargo climbs, tunnels, tubes, stretcher manoeuvres, river crosses, slippery slopes, dramatic drops, planks and pools over a course that recreates Royal Marines Commando training.
- Chip timing
- Enter online
- Age 16 & over
- 12 km multi terrain running

- Sun 12 Oct
- £40
- Sun 12 Oct
- £40
Hever Castle Commando Obstacle Festival | 3K | Sunday
Epic mud runs, cargo climbs, tunnels, tubes, stretcher manoeuvres, river crosses, slippery slopes, dramatic drops, planks and pools over a course that recreates Royal Marines Commando training.
- Chip timing
- Enter online
- Age 7 & over
- 3 km multi terrain running

- Sun 12 Oct
- £45-£210
- Sun 12 Oct
- £45-£210
Hever Castle Commando Obstacle Festival | 6K | Sunday
Epic mud runs, cargo climbs, tunnels, tubes, stretcher manoeuvres, river crosses, slippery slopes, dramatic drops, planks and pools over a course adapted from Royal Marines Commando training.
- Chip timing
- Enter online
- Age 8 & over
- 6 km multi terrain running