"U.S. Bicycle Route 50 follows the established Chesapeake & Ohio (C&O) Canal National Historical Park through Maryland. Located along the north bank of the Potomac River, the 184.5-mile canal towpath originates in Washington, D.C., then arrives in Cumberland, Md."
Read more: https://www.bicycletimesmag.com/content/new-us-bicycle-routes-approved-maryland-and-tennessee
Biking in Baltimore