Once a year, runners from all over the world would fly to Sabah to try their luck at conquering the world's toughest mountain race: Mount Kinabalu International Climbathon.
Climbathon allows participants to race to the summit of Mount Kinabalu (4,095.2 metres) and back, covering a total distance of 21 kilometres of rainforest and mountain terrain.
Going back in time, here are some highlights from the 25th Mount Kinabalu International Climbathon in 2011.
