Chiltern Challenge This fantastic 100km circular route will showcase the best of the Chilterns and surrounding countryside. You can walk, jog, or run along 3 iconic trails - the Ridgeway, Icknield Way and Chiltern Way - starting and finishing at our Base Camp in Henley-on-Thames. Passing through nature reserves & forests, along ancient footpaths, and of course up some of the Chiltern's famed hills - it's a route with variety which will surprise & amaze you. With 50km & 25km distance options also alongside the full 100km - there's a real challenge here for everyone! It will be rewarding, fun, and achievable with good preparation, spirit, and your determination. Join us for what will be an unforgettable weekend in the Chilterns. CLICK HERE FOR MORE INFORMATION Booking for this event has now closed.