5.0
(5)
64
riders
01:29
17.5km
120m
Mountain biking
The Perimeter Trail and Tilly Trail Loop is an easy 10.9-mile (17.5 km) mountain biking route in Rosaryville State Park. You will gain 394 feet (120 metres) over an estimated 1 hour and 28 minutes, making it a great option for a quick ride.
Last updated: April 23, 2026
Tips
Your route passes through a protected area
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Waypoints
Start point
Parking
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2.21Β km
Highlight (Segment) β’ Trail
Tip by
17.5Β km
End point
Parking
Way Types & Surfaces
Way Types
14.4Β km
3.03Β km
< 100Β m
Surfaces
17.4Β km
< 100Β m
< 100Β m
< 100Β m
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Elevation
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Weather
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Today
Monday 8 June
27Β°C
16Β°C
0Β %
Additional weather tips
Max wind speed: 19.0Β km/h
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This route was planned by komoot.
This mountain bike loop is designed to be an enjoyable ride, typically taking around 1 hour and 29 minutes to complete. This duration can vary based on your pace and how often you stop to enjoy the surroundings.
Yes, this route is rated as easy, making it a great option for beginner mountain bikers or those looking for a relaxed ride. While specific detailed terrain information for the Tilly Trail in Rosaryville State Park isn't extensively documented, the overall easy rating suggests it's generally accessible.
The trail is primarily designed for mountain biking, and given its 'easy' difficulty rating, you can expect a mix of relatively smooth paths. As it incorporates sections of the Perimeter Trail Loop and the Tilly Trail within Rosaryville State Park, you'll likely encounter typical state park singletrack and dirt paths. Expect some roots and potentially small obstacles, but nothing overly technical.
To access this loop, you'll want to head to Rosaryville State Park. There are designated parking areas within the park that provide convenient access to the trailheads for both the Perimeter Trail and the Tilly Trail sections.
Yes, Rosaryville State Park, like many state parks, typically has entrance fees. It's always a good idea to check the official Maryland Department of Natural Resources website for the most current information on entrance fees and any specific permits that might be required for mountain biking or other activities.
Generally, dogs are allowed in Maryland State Parks, including Rosaryville State Park, but they must be kept on a leash no longer than six feet at all times. Please ensure you clean up after your pet to help keep the trails enjoyable for everyone.
The best time to mountain bike this loop is typically during the spring and fall. These seasons offer milder temperatures and beautiful scenery. Summer can be hot and humid, while winter might bring muddy or icy conditions, depending on the weather.
As you ride this loop, you'll experience the natural beauty of Rosaryville State Park. The route includes sections of the Perimeter Trail Loop and the Tilly Trail, winding through wooded areas. While specific viewpoints aren't highlighted, the park's dense forests offer a peaceful and immersive outdoor experience.
Yes, this route incorporates significant portions of existing trails within Rosaryville State Park. You'll be riding on sections of the official "Perimeter Trail" for about 31%, 29%, 23%, and 20% of the route, and the "Tilly Trail" for approximately 26% of the route.
Rosaryville State Park typically offers basic amenities such as restrooms and picnic areas. It's always a good idea to check the park's official website before your visit for the most up-to-date information on available facilities and services.
For an easy mountain bike ride like this, essential items include a well-maintained mountain bike, a helmet, water, snacks, and basic repair tools (like a spare tube and pump). Given the wooded environment, insect repellent can also be useful, especially during warmer months.
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