Patapsco Valley Heritage Area - Trolley Trail # 9 is short ADA accessible trail that starts in Ellicott City and ends in Catonsville. The trail distance is about 1.25 miles (one way).
Trolley Trail Hike - Hiking in Portland, Oregon and Washington
Why Route 1's Trolley Trail Day is a Big Deal
Trolley Trail - North Clackamas Parks & Recreation District
Trolley Trail tour: You can now ride Portland to Oregon City nearly carfree (photos) – BikePortland
Number Nine Trolley Trail - VisitOldEllicottCity
Fairmount Park Trolley Trail – Fairmount Park Conservancy