The Lewis and Clark Marathon is an annual Bozeman, Montana event in late May or early June. Self-proclaimed to be "The first marathon in the west", the race is built on Lewis &amp; Clark's Corps of Discovery Expedition in 1806. The race is said to follow in the footsteps of the pioneers over a challenging marathon course of trails, paved and gravel roads complete with dramatic views of four mountain ranges, fresh air and wide open spaces. A significant portion of Lewis and Clarks journey was spent in Montana including a portion in Bozeman, a college town surrounded by the Gallatin National Forest and 90 miles from Yellowstone National Park. Situated at 4,793 ft above sea level.