Meet Stephanie Case - the first woman to run 100 miles in Antarctica

Ultra-runner Stephanie Case has made history by becoming the first woman to complete an extreme 100-mile race in Antarctica. The Antarctic Ice Ultra consists of 38 loops of a 4.2km course in the Schirmacher Oasis in Queen Maud Land, East Antarctica. Due to the harsh weather conditions, the race was brought forward to start at 1am on Sunday morning and Case says it was as much about survival as performance.

"The thing is that you need to run fast, but you need to do it in a way that you don't sweat, because if you sweat, that's a killer. It will make you cold instantly." Such is the brutal nature of the challenge on a continent that has 24/7 daylight, very few people attempt it each year and even fewer finish. This year, only four of the eight runners that started the 100-mile race crossed the finish line.

Previously only ever attempted by men, Case was one of three women on the start line but the Canadian was the only one to finish. One of the challenges Case had not considered though, as a self-declared "mountain goat", was managing toilet breaks in the extreme temperatures.