 The Lewis & Clark Bicycle Trail starts in Hartford, Illinois, close to where the Lewis and Clark Expedition began in St. Charles, Missouri.Since the expedition traveled primarily by boat, the bicycle route follows their path along the Missouri and Columbia rivers as much as possible.The route has 4,589 mapped miles and includes a number of optional spurs, detours, and even Clark’s eastbound return path after the expedition had split into two parties at Traveler’s Rest in Lolo, Montana.