2.8
(12)
94
runners
01:19
10.7km
110m
Running
Jog the moderate 6.6-mile Gray's Mill Trail in Patapsco Valley State Park, featuring forest views, natural surfaces, and the historic Gray's
Last updated: February 26, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Waypoints
Start point
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10 m
Highlight • Trail
Tip by
5.33 km
Highlight • Historical Site
Tip by
10.7 km
End point
Way Types & Surfaces
Way Types
10.7 km
Surfaces
10.7 km
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This route was planned by komoot.
The trail is located within Patapsco Valley State Park near Ellicott City. While specific parking details aren't provided, the trail is known to connect the Ellicott City and Catonsville areas. Look for designated parking areas within the park that provide access to the Gray's Mill Trailhead.
Yes, dogs are permitted on the Gray's Mill Trail. Always ensure your dog is leashed and follow all Patapsco Valley State Park regulations regarding pets.
The trail offers a picturesque setting winding through a forest, making it enjoyable in various seasons. Spring and fall are generally ideal for jogging due to milder temperatures and vibrant foliage. Wildflowers can be observed in spring, and the forest colors are beautiful in autumn. Be mindful that natural surfaces may be wet and covered with debris, especially after rain or in winter.
As the Gray's Mill Trail is located within Patapsco Valley State Park, standard park entrance fees may apply. It's always a good idea to check the official Patapsco Valley State Park website for current fee schedules and any permit requirements before your visit.
The trail is primarily a singletrack with natural surfaces, meaning it's a narrow path. You can expect rolling hills with 'punchy climbs' and descents, indicating a good workout with some challenging inclines and uneven ground. The surfaces can occasionally be wet and covered with debris.
The full route is approximately 10.6 kilometers (about 6.6 miles) and typically takes around 1 hour and 19 minutes to jog. Keep in mind that individual times may vary based on fitness level and trail conditions.
The trail winds through a forest, offering scenic views of the river valley. You can observe wildflowers and various wildlife. A notable historical point of interest along the route is the historic Gray's Mill, located near its upstream terminus.
The Komoot route for Gray's Mill Trail is an out-and-back route, meaning you will return along the same path you took to reach the turnaround point.
Yes, the route also passes through sections of the Patapsco Traverse (north hiking), Patapsco Traverse (north mtb), Patapsco Alt HoCo Thru Trail, Patapsco Howard County Thru Trail, Patapsco Traverse (south hiking), Patapsco Traverse (south mtb), Farm Connector Trail, HillTop Connector, Buzzards Rock Trail, and Sawmill Branch Trail.
The Gray's Mill Trail is equipped with amenities such as a kiosk and a bike fix-it station. For restrooms or cafes, you would likely need to visit facilities within Patapsco Valley State Park or in nearby Ellicott City.
While some segments are considered easier for hiking, the trail's singletrack nature and 'punchy climbs' make it moderately difficult for jogging. It's more demanding than a flat, paved surface, so beginners should be prepared for uneven ground and elevation changes.