Patapsco Valley State Park

Avalon History Center


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

This month's events:

Plan Ahead, Parks Can Fill Up 

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.

​Photo by Mark Hollis

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.​

Want to Live in Nature?

Grandparent and Me​​

Es Mi Parque


Grist Mill Trail

The Grist Mill Trail will be closed after Labor Day Weekend to permanently repair the footbridges. The trail will be closed for approximately 12 months. The Grist Mill Trail from the Patterson Viaduct footbridge off of Ilchester Rd will remain open to the Buzzards Rock trail connection. Please respect the closure as it will be unsafe to walk, bike or horse ride in the construction area due to heavy equipment use and no stream crossings. The Swinging Bridge will be open for foot traffic but not to access the Grist Mill Trail. Plan ahead.


The Hilton Area of the park will periodically close over the next two months due to paving. Please check Twitter and the Patapsco Valley State Park website for updates.​

Forest Glen

The Forest Glen Trail repairs are almost complete. As part of FEMA funding attributed to the 2018 floods in the Patapsco Valley, the Forest Glen Trail reroute (hiking only) is slated to be done soon the previous trail alignment will be closed. Please respect these trail closures on this hiking-only trail. Thank you Greenstone Trailcraft!

Hilltop Road

The new parking lot on Hilltop Road is officially open. This parking area increases capacity and features one of the new FPVSP funded trailhead kiosks. The old parking area is now closed.

Hilltop Road lot

Click here to sign-up for our monthly newsletter.