UK’s No 1 Series of treks & trail runs! Take on a challenge at your pace and fundraise for your favourite charity! Whether along a stunning coastline or on trails through magnificent countryside, you’ll get full support all the way–including plenty of food & drink, medics & massage, camaraderie, a medal & T shirt -and an amazing sense of achievement. With 20 events to choose from, and distance options ranging from 10km up to the full100km–there’s an Ultra Challenge waiting for you in 2026.