The “Race Across the Sky” was first held in 1983 and was created by Ken Chlouber, a local miner who wanted to bring attention to the town of Leadville after the closure of the Climax Mine. It has since become one of the most iconic ultramarathons in the world. Over the years, the Leadville Trail 100 Run has attracted top athletes from around the globe as they come to Leadville for the ultimate test of Grit, Guts and Determination, on their quest for the coveted silver and gold beltbuckle.