The UK’s No 1 Series of treks & trail runs! Join Team Cats for an epic adventure and help make a better life for cats. 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 10 km up to the full 100 km – there’s an Ultra Challenge waiting for you in 2026. View the full range of events here!