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Greenwell is a 596-acre state park located on the Patuxent River in St. Mary's county, Maryland. Created from a farm donated by John Phillip Greenwell, Jr., and his sister, Mary Wallace Greenwell, the park provides a rural setting for recreation along an important tributary to the Chesapeake Bay.
The park includes ten miles of hiking, cycling and equestrian trails, along with access to the river for kayaking and fishing. Greenwell State Park, in partnership with the Greenwell Foundation, also has a special focus on providing recreational opportunities and programs for the disabled.
Year-round, dawn to dusk.
(Note: Many places fill to capacity on busy, nice weather days, especially holiday weekends. Please call ahead or visit the official website to get the most up-to-date information before visiting.)
A $3.00 per vehicle service fee helps offset Greenwell Foundation operating costs.
Hiking/Equestrian/Cycling: Ten miles of marked trails are open to the public year round. Horseback Riding Lessons: The Greenwell Foundation offers recreational and therapeutic riding lessons. Contact the Foundation at (301) 373-9775 for more information.
Fishing: Visitors may fish from the pier or from the revetment year around. A sportfishing license is required for persons 16 years and older.
Picnicking: Visitors are invited to picnic on the grounds. The pavilion can be reserved by calling the Greenwell Foundation at (301) 373-9775.
Hunting: Hunting is permitted during established seasons. Contact the park for further details.
Canoeing and Kayaking: Non-motorized craft can be walked in and launched from the beach area or from an accessible (ADA-compliant) floating kayak and canoe launch. The Greenwell Foundation offers kayaking lessons, rentals, and guided trips through its River Riders kayaking program (April-October).
Swimming: Swimming is permitted from the beach area only. There is no lifeguard on duty, so swimming is at your own risk.
The Quarter Creek pavilion and the historic Rosedale Manor House, perennial garden, and lawn can be reserved for events such as weddings, reunions, meetings, and conferences.
Pets are allowed in Greenwell State Park.