Multi-terrain runs in UK in May 2026
Find multi-terrain runs in UK in May 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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Event listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sat 2 - Sun 3 May
- £39-£199
Isle of Wight Ultra Challenge
Great challenges need great settings, and up to 2,000 adventurers will take on the Isle of Wight stunning coastal path – all out to push themselves further this year!
- Trail run 3
- 50K ultra run 3
- 100K ultra run 2
- Ultra run
- Sat 2 - Mon 4 May
- £7-£75
Mid Sussex Marathon Weekend
Be part of the action! The Mid Sussex Marathon Weekend returns for it’s 15th year in 2026. This unique sell-out Bank Holiday weekend event has something for everyone.
- 10 miler 2
- 10K run
- Marathon 2
- Fun run 6
- Multi-terrain run
- Sun 3 May
- £20-£49
Three Forts Challenge
Welcome to the best running event for miles! Run rolling South Downs trails, climb rewarding hills, and take in sweeping coastal views in a scenic, spacious event. Run with heart. Run the hills.
- Trail run
- Half marathon
- Marathon
- Sat 9 - Sun 10 May
- £20-£189.53
Tough Mudder London West
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.
- Obstacle race 5
- Sat 9 - Sun 10 May
- £95.50-£155.50
24 Hours South | The Offa's Dyke Ultra
The finish line is unique to you: 24 hours after the mass start, the race shall stop and the Solo Runners and Teams furthest South on the National Trail, shall be declared winners.
- 24 hrs trail running + 8561 ft ascent
- Sun 10 May
- £24-£60
Shires and Spires
A selection of races with top reviews based in the village of Naseby famous for the Battle of Naseby in 1645. The ultra takes in Althorp, home of the Spencer family and Princess Diana's resting place.
- 10K run
- Half marathon
- Marathon
- Trail run
- Ultra run
- Sun 10 May
- £16
Yarrow River Bluebell 10K Trail Run
A beautiful Spring trail run through the heart of Yarrow Valley, timed perfectly to coincide with the colourful and fragrant bluebells. Great running, friendly vibes and a brilliant day out!
- 10 km trail running + 527 ft ascent
- Sun 10 May
- £25
Odyssey 10K
Join the Odyssey 10km — a scenic multi-terrain race along the River Thames with instant app timing, medals, goody bags, awards and friendly marshals. Unforgettable running vibes!
- 10 km multi terrain running + 39 ft ascent
- Sat 16 - Sun 17 May
- £39-£199
Jurassic Coast Ultra Challenge
Walk, jog or run along the spectacular UNESCO World Heritage coastline from Corfe Castle past Lulworth Cove and Durdle Door, with full support, welcoming base camp and finish line celebration!
- Trail run 2
- 50K ultra run 2
- 100K ultra run 2
- Marathon
- Ultra run
- + 1 more race
- Sat 16 - Sun 17 May
- £39.60-£44
- Teams save 10%
Dorset Mud Run
Muddy good fun! Tackle 15+ award-winning obstacles across 6km of stunning Dorset countryside — then celebrate with friends, a cold drink, and a t-shirt you've truly earned.
- Mud run 2
- Sun 17 May
- £27-£38
The Birthday Run
Zig Zag Running is 6 years old this month so why not come along and celebrate?! You are promised lots of cake!
- 5K run
- Multi-terrain run 2
- Half marathon 2
- Marathon
- Ultra run
- Sun 17 May
- £40
Smash Sherwood | 16K
Smash Sherwood 16K is set to be a banger of a race! Expect mixed terrain, hills, loose surfaces and exposed tree roots as you experience the forest. Medal and T-shirt too!
- 16 km trail running + 194 m ascent
- Sat 23 - Sun 24 May
- £89-£199
London 2 Brighton Ultra Challenge
Walk, jog or run the capital-to-coast route with 2,000 other adventurers over a range of distance options available and superb support all the way, for all abilities and experience levels.
- Trail run 3
- Ultra run 2
- Marathon
- 100K ultra run 2
- Sat 30 May
- £12-£28
Abersoch 10K and 3K Beach Race
The Ty Gwyn Abersoch 10K is an exhilarating race with a memorable atmosphere in a most stunning part of the world, with a 3K Beach Race, golden sands, live music and beach bar too!
- 10K run
- Fun run
- Sun 31 May
- £24-£42
Rothwell Cakeathon
Run. Refuel. Repeat. Take on the Rothwell Cakeathon and earn every slice in this friendly, traffic-free, flat, runnable course with a welcoming, no-pressure atmosphere.
- Trail run 2
- Half marathon
- Marathon