Thames Path Ultra Challenge
London, United Kingdom • 12-13 Sep 2026
Event overview
The Thames Path Ultra Challenge is scheduled for 12-13 September 2026. The main route follows the Thames towpath from the Putney Bridge / Bishops Park area upstream to Henley-on-Thames. The route passes Richmond, Hampton Court, Runnymede and Windsor and finishes by the river in Henley. The challenge is part of a weekend Thames Path Festival that also includes the Thames Bridges Trek and the Thames Moonlight 10, plus the Henley 10K.
Distances and categories
- 100 km (continuous option and a 2-day daylight option)
- 72 km (3/4 challenge)
- 50 km (first half and second half options)
- 28 km (quarter sections)
- 22 km (quarter sections)
- 10 km (Henley 10K riverside loop)
Support, services and entry options
Rest stops are provided about every 12.5 km, with larger "major" stops every ~25 km offering marquee cover, catering, seating, changing rooms, medical and welfare tents. The route is fully signed and supported by an event app with GPS tracking; a timing system scans participants at rest stops. Camping packages are available near the halfway point for the 2-day option. Shuttle buses and transfers are offered to local train stations and key venues. There are entry categories including an Ultra March option for brisk walkers and a Trailblazerz option for faster, time-targeted runners. Fundraising options include a range of charity partnerships and discounted charity registration fees. Visit the organization's website for the most recent information.