Experience the Chiltern 50 Ultra Challenge for Dogs for Good and follow trails shaped by beech forests, ridgeway paths and open farmland. Your effort plays an important role in helping people build life-changing bonds with our dogs.
Join up to 2,000 adventurers on a 50km looped challenge in some of the Chiltern’s finest countryside, with historic trails, rolling hills and nature reserves. Take it on at your own pace as you walk, jog or run – and fundraise for Dogs for Good!
With 20km and 10km distance options also 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.
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.
