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
5 days ago

hiking
17 days ago

Trail was in great shape, weather was perfect, and not too much traffic (mostly mountain bikes, a few walkers/runners, two horses).

hiking
25 days ago

We love hiking this trail. There were a few areas on trail today that were washed out due to the heavy rains. Still a great workout.

hiking
1 month ago

mountain biking
1 month ago

hiking
1 month 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
1 month 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
2 months ago

trail running
2 months 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
2 months ago

Excellent trail! Nice canopy. Decent elevation.

hiking
2 months ago

hiking
3 months ago

hiking
3 months ago

3 months ago

nice day hike. did it in 3 hours.

on Perimeter Trail

hiking
4 months ago

hiking
4 months ago

walking
4 months ago

Ok. There was a lot of mountain bikes.