Our end of season Chiltern Challenge covers some of the best of the Chilterns countryside and is a brilliant way to either end your Ultra Challenge season with a bang, or a great challenge to start your Ultra Challenge journey. Walk, jog or run a 50k, 25k or 10k loop as an individual or a team, with full support and hospitality all the way. With a start and finish at our basecamp in Henley, there's also a Saturday night BBQ, bar and entertainment, with extensive on-site camping and parking options – there’s a challenge for everyone!

Your entry includes a range of free food and drink at regular rest stops, and support from medics, marshals and massage teams. As you cross the finish line, you’ll get a glass of fizz, t-shirt, and a special medal to celebrate your achievement. As we are an ‘Official Charity Partner’ – sign up now and commit to fundraise for us!