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. Two pavilions, each accommodating 200 guests, are available for rent. A bathroom is a short distance from the pavilion area. A $100 security deposit is required for all pavilion rentals. For pavilion reservations at Rosaryville State Park please call 301-856-9656.

mountain biking
7 days ago

on Perimeter Trail

hiking
10 days ago

There were a lot of bicyclers on the trail, which I did not like because it was already too narrow for 2 hikers side by side. Be sure to look down otherwise you'll trip. overall, great hike in an area that I never thought to check out.

mountain biking
17 days ago

We took our 10 and 12 year old boys for their first intermediate ride here today. It was a very nice combination of uphills and downhills. Several of the little bridges were partially washed out, and we had to carry our bikes over a few larger fallen trees, which was pretty fun (probably just due to recent flash flooding). It was a fun and challenging course for the kids, especially with the terrain and tree roots that cover the almost 9 mile ride. Nice time, and I'll be back.

hiking
1 month ago

trail running
1 month ago

Very good trail and challenging run workout. Did a training run this morning (counterclockwise). Since its single track had a couple close calls with mountain bikers but everyone was cool/friendly! Plenty of shade, only about four very short sections without tree cover.

trail running
1 month ago

Excellent trail! Nice canopy. Decent elevation.

hiking
1 month ago

hiking
2 months ago

hiking
2 months ago

2 months ago

nice day hike. did it in 3 hours.

on Perimeter Trail

hiking
2 months ago

hiking
3 months ago

walking
3 months ago

Ok. There was a lot of mountain bikes.

4 months ago

Very challenging

trail running
4 months ago

Nice trail for getting some miles in, not too technical - a good training loop.

4 months ago

hiking
5 months ago

Great hike, easy walk with a few ups and downs. Narrow trail is shared with mountain bikers, no issues. Didn't see many people and the ambience was quiet.