Join more than 3,000 adventurers for this unforgettable challenge. Starting at Putney Bridge, the 100km route heads upstream to Henley along the famous Towpath. It’s through Richmond, Hampton Court, Runnymede, and Windsor, with some wonderful scenery to a riverside finish line. With shorter distances also available, there’s a Thames Challenge for everyone. Get to the finish and feel great pride in your achievements, knowing that the money you raise will help fund vital research to find new treatments and, ultimately, cures for brain tumours.