The Rocky Mountain Slam challenges ultrarunners with a lineup of five of the country's toughest mountain races

Running 100 miles through the Rocky Mountains is challenging enough. Doing it four times, in race conditions, over a span of 3.5 months is a huge accomplishment. Doing it earns runners the Rocky Mountain Slam. My story on the Slam for Competitor.com: http://running.competitor.com/2017/07/trail-running/rocky-mountain-slam-ultrarunning_166675