Patapsco Valley State Park

Reservationschildren playing near a stream at Patapsco

Contact: ​410-461-5005​
E-mail Patapsco Valley State Park

Baltimore and Howard Counties

Patapsco Valley State Park
8020 Baltimore National Pike
Ellicott City, MD 21043

Hours: 9 a.m. to Sunset



Patapsco Valley State Park extends along 32 miles of the Patapsco River, encompassing 16,043 acres and eight developed recreational areas. Recreational opportunities include hiking, fishing, camping, canoeing, horseback and mountain bike trails, as well as picnicking for individuals or large groups in the park’s many popular pavilions. The park is nationally known for its trail opportunities and scenery. We have over 200 miles of trails, with 70 of those miles identified as maintained trails. There are hiker only trails and multi-use trails accessible from many areas of Patapsco.

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Grist Mill Trail Bridge in the summer.​Grist Mill Trail

Park, Trail and River Closures

NOTICE: The Grist Mill Trail in the Avalon area of Patapsco Valley State Park, including the swinging bridge (bridge from Orange Grove to the Grist Mill Trail) is now open from Lost Lake north to the Saw Mill and Forest Glen trails. Click here for detailed information.