Content starts here

CLOSE ×

AARP Membership — $15 for your first year when you sign up for Automatic Renewal

Get instant access to members-only products and hundreds of discounts, a free second membership, and a subscription to AARP the Magazine.

Join Now

Renew Now

Volunteer with AARP Foundation Tax-Aide and Make a Difference in Your Community

Back to Things to Do

Rosaryville State Park

Name: Rosaryville State Park
Address: 7805 West Marlton Avenue, Upper Marlboro, MD, 20735, US

7805 West Marlton Avenue

Upper Marlboro, MD 20735

Visit Website

By clicking the links above, you'll leave AARP and go to a website that is not operated by AARP. A different privacy policy and terms of service will apply.

301-856-9656

Rosaryville is a 982 acre day-use park and the location of the historic Mount Airy Mansion. Miles of trails for hiking, biking and equestrians are available for day use. 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.

Please use "Flag This Place" to alert us about content that is inappropriate or needs immediate attention. Nothing you submit will be shared with other site visitors.

AARP Events for Encinal

Featured Event

A Gentle Workout: Non-Impact Aerobics

Tuesday, Dec 16, 2025 at 10:00 a.m. CT

Zoom

Online Event
Featured Event

Reduce Stress & Stay Healthy With Zumba Fitness

Tuesday, Dec 16, 2025 at 12:00 p.m. CT

Zoom

Online Event
Featured Event

Take Time for a Year-End Reset and a Look Ahead

Tuesday, Dec 16, 2025 at 3:00 p.m. CT

Zoom

Online Event