There's running, and then there are marathons, but the Columbia Montrail line of running gear is inspired by the true limits of endurance. The clothing was developed in partnership with the Ultra-Trail du Mont-Blanc, one of the most popular long-distance trail races in Europe. Just how long is this ultra-endurance race? A grueling 103 miles.
Typically, the path along which the Ultra-Trail du Mont-Blanc runs is used by hikers as a walking route that takes several days to span. The trail winds around Mont Blanc, the famous French alp, forming a loop, and more than 2,400 ultra-racers run it each year.
The Columbia Montrail line is designed to handle the intensity of such a race, with an ultralight jacket, shirt, and shoe making up the series.