In the 100-mile distance, it’s about the guy who slows the least over the course of the race, not the one who finishes the strongest.

Elite mountain ultrarunner Nick Clark, 39, has a family, a full-time job as a copy editor and writer for an international education company, co-runs Gnar Runners, a race directing business, volunteers to put on a local race series in his hometown of Fort Collins, Colo., and consistently finishes in the top five, often setting new course records, at race distances from 10K to 100 miles.

Join Nick as he leads your group trail run of 2 to 8 people through the Horsetooth or Lory State Park area.