The Roanoke Canal Museum and Trail is one of the city's oldest historical sites. The 1823 canal lock building has been adapted as a museum to show the significance of the canal system to American westward expansion. It offers an in-depth look at the influential people who pushed for the Roanoke River to become a source of trade and navigation, as well as the commodities that were shipped and traded on the Roanoke River. The trail, over seven miles long, is adjacent to the museum and largely parallel to the Roanoke River. It is commonly used by runners, bikers, photographers, and wildlife admirers. It is used as the course for the annual Roanoke Canal Half Marathon, and the Roanoke Canal Mountain Biking Club is located nearby.