Check out the highlights from the 25th edition of the hardcore endurance relay
The most intense endurance challenge in Europe sees tag teams made up of four tough guys fighting it out for the Red Bull Dolomitenmann title.
The event (which means 'Dolomite Man' in English) starts with a mountain running leg from the base in Lienz, Austria, followed by sessions of paragliding, whitewater kayaking and downhill mountain biking.
Every year, more than 100 teams take part in the extreme race, while tens of thousands of fans are on hand to support the teams as they set off to do battle over 50km of alpine terrain.
This 26th edition of Red Bull Dolomitenmann is sure to live up to the very high standards of the previous competitions.