Rosaryville State Park

Prince George’s · Maryland Department of Natural Resources

PLAN YOUR VISIT

The practical details.

Managing agency: Maryland Department of Natural Resources

We have not yet verified hours, entry fees, accessibility details. Confirm these with the managing agency before traveling.

Check notice timestamps and official updates. Conditions can change between source checks.

About Rosaryville State Park

Rosaryville State Park7805 West Marlton Avenue Upper Marlboro, MD 20772Contact: Park Headquarters 301-888-1410Duty Ranger is 443-975-4358 Hours: Park is Open 8 a.m. to sunset. All vehicles must exit the park before the gate closes at sunset. If locked in, call Park Watch at 1- 800 825 7275. Rosaryville is a 1227 acre day-use park with miles of trails for hiking, biking and equestrians. To gain access to Rosaryville State Park, make a right turn into the entrance just south of Osborne Road while traveling south on U.S. 301.

Find your way.

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Map points represent park land, not verified visitor entrances. Follow the managing agency’s entrance directions. Tiles © OpenStreetMap contributors.

This point represents park land, and may not be a public entrance. Follow official entrance directions.

Official visitor information & directions ↗

Read before you roam.

THE FIELD GUIDE

Sources & verification

Park facts and notices are checked separately. Missing facility information does not mean a facility is absent. Official visitor page checked Oct 15, 2026.