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.

hiking
25 days ago

Hiked this on a near 50-degree day in Dec. Very calm and pleasant hike, but felt somewhat monotonous at this time of year. There were a number of spots with windy creeks, open fields, and fallen trees, but not many varied views otherwise. We saw a deer too, that was cool. But mostly lots of trees with no leaves at this time of year and the ground blanketed with dead leaves. Pretty brown everywhere. Ok for a while, but I was ready to stop by mile 6. There was nowhere to really stop and eat a snack too; we ate our apples while walking. It took us ~4 hours. Everyone else along the trail were mountain bikers and there was one group of horseback riders. We always stepped aside and they were very appreciative of it.

mountain biking
4 months ago

I rode this trail on Saturday 9/15. There are some leaves down already and they were wet. In fact, it was quite muddy out there but I enjoyed it. One fallen tree blocking the trail around mile 4 (clockwise). Overall conditions good but muddy.

mountain biking
4 months ago

Nice and easy trail. clockwise is much more challenging. W more climbs. Watch out for self centered arrogant hikers who think standing in the middle of the trail is ok

hiking
4 months ago

Great trail the only drawback is sharing the trail with mountain bike riders. Nearly twisted my knee trying to get out if the way of a mountain biker. Had to step off the trail quite a few times that day for riders. Other than that great hike. Bring water you will need it.

mountain biking
4 months ago

Good clean fun

trail running
5 months ago

This was a great and well marked trail! Almost all shaded single track so you do have to stay aware for mountain bikers and horseback riders. I went out on a rather warm Sunday around noon and only came across one other runner and two mountain bikers. My GPS tracked just under 500ft of both elevation loss and gain and I ran/hiked the loop clockwise in two hours. Will definitely be going back.

hiking
6 months ago

Great trail! Must look out for mountain bikers tho - they come up quick! Really great trail - easily marked.

hiking
7 months ago

This is a very scenic wooded trail. There are a lot of switchbacks and hairpins which adds to the overall length of the trail. It is well marked and easy to follow. The trail is quite narrow and we had to be mindful of cyclists which was not a big deal. Bring plenty of water as there are no amenities along the trail.

hiking
11 months ago

Love this place. Trail was still pretty muddy which equated to a quiet peaceful hike with no one else on the trail, just me and my lab. Completed it counter clockwise this time. Beautiful canopy and nice place to reset your heart and mind.

hiking
Wednesday, December 06, 2017

bring a compass, watch out for self centered dangerous mntn bikers who don't care if you are walking. the trails were originally designed for hunt club so you will see neat things that if you understand riding along way. But it's a great park to learn how to use a compass in. I did when I was a kid, i still get lost. great trail, just ignore the mountain bikers

Monday, November 27, 2017

Ok first! The trail is confusing in the beginning. Use your trail app GPS!! There are 3 ways to enter the trail. If you go counter clockwise you will have no problems. If you go clockwise, you will exit the trail in 5 mins, then you will have to cross this closed off parking lot then a street to enter the real beginning of the clockwise trail. This is a serious mountain biking trail. The clockwise trail is moderate. The counterclockwise loop is a bit harder.

Monday, November 06, 2017

Nice trail, lots of Bikes.

hiking
Saturday, September 30, 2017

whoa this trail is horribly confusing if you're a newbie here. we felt like we were going in circles at first. going in a group can lead to chaos too because we also had to be mindful of mountain bikers. other than that the scenery is peaceful, earthy, and mild to moderately challenging. No restrooms just porta potty things and we never saw them except when leaving park.
the trail is long and we stopped at a certain point and just looped back. saw a toad, 2 turtles, bird nest, 2 lizards as far as wildlife sightings go.
people ride their horses here but they have equestrian trails if they are not on the hiking and biking trails.

hiking
Monday, September 04, 2017

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

hiking
Sunday, August 27, 2017

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
Sunday, August 06, 2017

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
Sunday, July 30, 2017

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.

trail running
Monday, July 03, 2017

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
Sunday, July 02, 2017

Excellent trail! Nice canopy. Decent elevation.

Tuesday, May 30, 2017

nice day hike. did it in 3 hours.

walking
Sunday, April 30, 2017

Ok. There was a lot of mountain bikes.

Sunday, April 16, 2017

Very challenging

trail running
Sunday, April 16, 2017

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

hiking
Sunday, March 12, 2017

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.

hiking
Friday, February 03, 2017

Great hike. Will come back to run it next week. Not hard. Length is the only thing that makes it Moderate.

Wednesday, October 12, 2016

Either I got lost, or this trail is 10.5, not 9.5. I based my morning off of one less mile and was not happy about missing a work meeting.

Tuesday, September 13, 2016

As a hiker, I had a poor experience. I was continuously stepping aside as best I could to avoid large groups of mountain bikers. Trail was not clear and we managed to circle back to the start of the train twice, never getting to do the whole loop.

Sunday, September 11, 2016

Did all 9 hiking today. Exhausting! Didn't even see a bug! But I like that. Probably beautiful as leaves change.

Sunday, August 28, 2016

mountain biking
Tuesday, July 12, 2016

Nice, smooth, flow-y single-track - Nothing technical. There are a few climbs, but nothing long and/or crazy steep. It can be dangerous as visibility is low and some people decide to hike/bike counter clockwise. But overall it's great and has become my go-to trail since moving to the area.

I deducted one star because the markings are not great and a few times I got to an fork or area and had to just pick a way to go and hope I stayed on the loop. Soon after you start, you'll hit an abandoned parking lot; Continue through it and across the road you'll see the trail continue.

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