Need a nice challenge? Then forget this one. It�s nasty. Cut the Leadville Trail 100 in half. Remove all the easy parts. Throw in technical descents. Burning lungs. Wild animals. And you have a good understanding of what you�re about to get into. The 50-mile out-and-back course takes racers through the historic mining district on the east side of Leadville, passing many grand and historic gold and silver mines. It will begin at the Cloud City Ski Hut (located just below Colorado Mountain College on Hwy. 24 on the south end of Leadville). None of the roads used will be closed to vehicle traffic, so please use caution. The courses will be well marked with fluorescent pink-and-black-striped ribbon and chalk arrows.