
Join over 3,000 adventurers for an unforgettable challenge. Take it on at your own pace as you walk, jog or run – and fundraise for Dogs for Good!
With a start at Putney Bridge, the full 100km route heads upstream to Henley along the famous Towpath. Then it’s through Richmond, Hampton Court, Runnymede and Windsor, with some wonderful scenery to the riverside finish line.
Taking place on 12 – 13 September 2026 and with different distance options available, sign up as an individual or as a team and get full support all the way – with plenty of food and drink, optional camping and transfers, a special medal, t-shirt and celebration finish.
Push yourself further in 2026, take on an Ultra Challenge – the UK’s number one series of treks and trail challenges.
Get over 60% off registration fees!
Dogs for Good are an official partner of this event, meaning you get a 25% discount on the 'Full Charity Sponsorship' registration fee when signing up to support us. But if you sign up by 31 January 2026, you can actually get over 60% off registration fees with the code HELLO2026.
Get the full details and sign up.