Threshold Sports

Threshold Sports

Discover some of the most iconic events in the UK!

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!

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.
  • Sat 21 Jun 2025
  • £70
Chichester, West Sussex, UK

Race to the King | 50K Coastal

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.

  • 50 km trail running + 1885 ft ascent
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.
  • Sat 21 - Sun 22 Jun 2025
  • £160
Chichester, West Sussex, UK

Race to the King | 100K Non-stop

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.

  • 100 km trail running + 4619 ft ascent
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.
  • Sat 21 Jun 2025
  • £70
Chichester, West Sussex, UK

Race to the King | 50K Castle

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.

  • 50 km trail running + 2663 ft ascent
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.
  • Sat 12 Jul 2025
  • £75
Watlington, Oxfordshire, UK

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.

  • 50 km trail running + 710 m ascent
Take on the full 100K Race to the Stones ultramarathon in one go. Fully supported through day and night on an incredibly scenic and historic route.
  • Sat 12 Jul 2025
  • £50
Watlington, Oxfordshire, UK

Race to the Stones | 100K Non-stop

Take on the full 100K Race to the Stones ultramarathon in one go. Fully supported through day and night on an incredibly scenic and historic route.

  • 100 km trail running + 3704 ft ascent
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.
  • Sat 12 Jul 2025
  • £250
Watlington, Oxfordshire, UK

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.

  • 100 km trail running + 3704 ft ascent
Take on the full Race to the Stones 100K ultramarathon over two days, making your own arrangements for overnight accommodation at the halfway point.
  • Sat 12 Jul 2025
  • £160
Watlington, Oxfordshire, UK

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.

  • 100 km trail running + 3704 ft ascent
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.
  • Sun 13 Jul 2025
  • £75
Wantage, Oxfordshire, UK

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.

  • 50 km trail running + 630 m ascent

Fixed time runs

How far can you run in 24 hours? It's time to find out.

The UK’s biggest 24 hour relay 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?
  • Sat 7 - Sun 8 Jun 2025
  • £70-£100
Reading, Berkshire, UK

Endure24 | Reading

The UK’s biggest 24 hour relay 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?

  • 24 hrs multi terrain running
The UK’s biggest 24 hour relay 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?
  • Sat 28 - Sun 29 Jun 2025
  • £70-£100
Wetherby, West Yorkshire, UK

Endure24 | Leeds

The UK’s biggest 24 hour relay 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?

  • 24 hrs multi terrain running