Seb comes from the little-known world of canicross – trail running while being pulled by a dog. It may make you crack a smile, but it’s an excellent sport for developing your leg speed, with the dog actually training the runner to run at faster speeds. When he finally let go of the dog and tried out trail running on its own, Seb immediately showcased incredible qualities. He’s a real rocket and one of the best in the world in 50 miles+.