The Langdale Horseshoe is an annual Lake District fell race that starts and finishes at the Old Dungeon Ghyll. The course climbs to Stickle Tarn before heading to Thunacar Knott, Esk Hause shelter, Bowfell, Crinkle Crags and Pike of Blisco. The route is approximately 21 kilometres (13 mi) in length with 1,450 metres (4,760 ft) of ascent.[1] It includes much rough and rocky ground. On the descent from Crinkle Crags, many runners negotiate the Bad Step, although it can be avoided depending on route choice. The race often presents navigational difficulties, especially in poor visibility.[2]