Corps of Discovery Trail Races

The Corps of Discovery Trail Races, hosted by the St. Louis Track Club, take place annually in the scenic Weldon Spring Conservation Area near Saint Charles, Missouri. The event offers three distances: a 5-mile Clark Trail, a new 8-mile Lewis Trail, and a half marathon combining both trails for a total of 13.1 miles.

Runners experience rugged upland forests, steep bluffs, and stunning views of the Missouri River. The course is marked and travels counterclockwise, featuring challenging climbs and diverse terrain. The race emphasizes a natural, historic setting linked to the Lewis & Clark expedition, providing a memorable trail running experience for all levels. Visit the organization's website for the most recent information.