The Red Bull X-Alps is the world’s toughest adventure race. It’s a bold claim – but one it surely deserves. It’s difficult to think of another race that demands such a high level of fitness and technical skill – or lasts so long.

The rules are simple. Athletes must race across the Alps, by foot or paraglider, a straight-line distance of 1,038km. Over the years, the race has attracted and tested to the limit some of the world’s top adventurers. It demands not only expert paragliding skill but extreme endurance. Some athletes will hike over 100km in a day and will cover hundreds of kilometers on foot – and 1000’s of meters in altitude – by the time the race is over!

source