The Greenwell Foundation is located inside Greenwell State Park in St. Mary’s County in Southern Maryland.

Map showing location of Greenwell State ParkThe park is open year-round from sunrise to sunset.

A $3.00 per vehicle service fee helps the Greenwell Foundation operate Equestrian, Nature Time, and Summer Camp programs.

Our address:

25420 Rosedale Manor Lane
Hollywood, MD 20636
Directions to Greenwell State Park   |   Park Map and Trail Guide


Things to do at Greenwell State Park
In addition to the accessible and inclusive programs offered at Greenwell, the park offers many opportunities to enjoy the outdoors.


Fishing is allowed from the pier and the revetment overlooking the Patuxent River. A fishing license for people over 16 years of age is required.


Crabbing is allowed from the pier. Only those of legal size may be kept. Important information about turtle excluder devices.


Swimming is allowed from the two beach areas only. There is no lifeguard on duty.


Kayaking | Canoeing
Launch your kayak or canoe from the beach areas and from Quarter Creek, site of an accessible floating dock. Only non-motorized craft allowed.

– Greenwell is on the Captain John Smith Chesapeake National Historic Trail. View the “Boater’s Guide” >>

– Greenwell is also on the Chesapeake Bay Gateways Network. Learn more >>


Hiking | Horseback Riding | Bicycling
The 600-acre park has a diverse array of habitat and topography including two miles of Patuxent River shoreline and approximately 10 miles of trails, including two shoreline trails.
Park map and trail guide

Horseback riding lessons are offered year-round. Other options include a one-time ride, a group ride, or a group visit. Is riding a horse on your bucket list? We can help!


Picnic tables and barbeques are available throughout the park. The Quarter Creek Pavilion is open for public use when not reserved for events or in use by summer camp.


Park Quest
A a family-based outdoor recreational program featuring kayaking, hiking, biking and historical adventures in Maryland state parks. (Spring through Labor Day)


Pets are allowed in the park, based on the Maryland Park Service pet policy. The policy refers to domesticated animals, such as dogs and cats, and does not include farm animals. For details, read the Maryland Park Service Pet Policy.


For more information, please contact the Department of Natural Resources at 301.872.5688 or 301.872.5389.