Sarah Etonge is a star in the sport that involves running over what landforms?
Fell running Fell running, sometimes known as hill running or mountain running, is the sport of running and racing, off road, over upland country where the gradient climbed is a significant component of the difficulty. The name arises from the origins of the English sport on the fells of northern Britain, especially those in the Lake District.
Swimrun A Swimrun is a multiple-stage competition which involves participants running and swimming over a cross-country race course that involves many transitions between the swim and run stages of the race.