1-888-432-2267
Prince George's County
Rosaryville State Park
7805 West Marlton Avenue
Upper Marlboro, MD 20772
Contact: 301-888-1410
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.
The day use service charges are collected at the automated gate system at the entrance payable via credit or debit or cash (exact change only). Passholders (Maryland Passport, Golden Age and Universal Disability) may contact the park by email (cedarville.statepark@maryland.gov) or the Duty Ranger at 443-975-4358 to receive a swipe card that allows free entry through the automated gate system.
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