Event overview
Explore Britain's oldest path, the Ridgeway, on this epic ultramarathon offering stunning 50K or 100K routes through the stunning Chiltern Hills AONB and North Wessex Downs AONB, en route to the finish line at the mythical UNESCO World Heritage Site, Avebury Stone Circle.
Expect a superb level of support and organisation, on the UK's favourite ultramarathon, with fantastic overnight options at the all-inclusive Basecamp.
Highlights
UK's oldest trail
An unforgettable route running towards the UNESCO World Heritage Site of Avebury stone circle.
Unrivalled support
World class support whether you set the record or make the most of extended cut offs.
Accessible terrain
A fantastic mix of woodland, riverside and ridge trails without the need for technical skill.
90% completion rate
Extended cut off times and medical support at every stage make it the a fully accessible Ultra.
Community
Join our community of thousands of Ultra runners and walkers for guidance, support and camaraderie.
Event details
- Average fitness
- Event village
- Families
- Newcomers
- Spectators
- Teams
Location
- Bag transfer
- Paid parking
- Rural
- Toilets
Sustainability
- Bring your own cup
- Public transport links
- Recycling
- Sustainability policy
Races at event
- Sat 12 Jul 2025
- #1 of 5
Day One | Thames Valley 50K
08:00
Age 18 & over
£75
- 50 km trail running + 710 m ascent
- Sun 13 Jul 2025
- #2 of 5
Day Two | Ridgeline 50K
08:00
Age 18 & over
£75
- 50 km trail running + 630 m ascent
- Sat 12 Jul 2025
- #3 of 5
100K Non-stop
08:00
Age 18 & over
£50
- 100 km trail running + 3704 ft ascent
- Sat 12 Jul 2025
- #4 of 5
100K Two Days with camping
08:00
Age 18 & over
£250
- 100 km trail running + 3704 ft ascent
- Sat 12 Jul 2025
- #5 of 5
100K Two Days no camping
08:00
Age 18 & over
£160
- 100 km trail running + 3704 ft ascent