Endurance athlete Marshall Thomson is based out of Crested Butte, CO. He won the 2013 Leadville Trail Marathon in 3:37:07 and set the course record for the 2013 Collegiate Peaks 50-mile race in Buena Vista, Colorado with a time of 6:53:28. As well as being an accomplished endurance runner, Thomson has also enjoyed victories in the sport of ski mountaineering. In 2011, Thomson and partner Stevie Kremer were the first-place co-ed team in Colorado’s Elk Mountains Grand Traverse—a grueling 40-mile backcountry ski race between Crested Butte and Aspen—and second-place team overall. The dynamic duo placed 1st again in 2014’s race and Thomson was crowned Overall US Ski Mountaineering National Champion. You can contact Marshall through Karli Racing.