Challenging participants to push their limits
Threshold Sports organise epic endurance events across the UK, focusing on challenging participants to push their limits - their moto is 'We believe More Is In You'. Their main events include:
- Threshold Trail Series - weekend-long ultramarathons in spectacular British landscapes with distances from 50km to 100km.
- Endure24 - 24-hour trail races held in Reading and Leeds where participants complete as many 8km laps as possible within the time limit.
Events cater to a wide range of participants, from first-timers to experienced athletes, emphasising inclusivity and personal achievement.
Threshold Trail Series
Looking for an ultra run in epic scenery? You've come to exactly the right place!
- Sat 20 Jun 2026
- £60-£175
Race to the King
Take on a challenge fit for royalty in this epic ultramarathon along the South Downs Way and Monarch’s Way. Choose from two unique 50km loops – or tackle both in a non-stop 100km challenge!
- 50K ultra run 2
- 100K ultra run
- Trail run
- Ultra run
- Sat 11 - Sun 12 Jul 2026
- £90-£275
Race to the Stones
Conquer Britain's oldest trail, the ancient Ridgeway, as you race towards the 5000-year-old Avebury Standing Stones.
- 50K ultra run 2
- 100K ultra run 3
Fixed time runs
How far can you run in 24 hours? It's time to find out.
- Sat 6 - Sun 7 Jun 2026
- £95-£105
- Team & charity places only
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?
Team & charity places only
- 24 hrs multi terrain running
- Sat 27 - Sun 28 Jun 2026
- £95-£105
- Team & charity places only
Endure24 | Leeds
The north'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?
Team & charity places only
- 24 hrs multi terrain running