4.7
(7973)
19,829
hikers
03:02
11.4km
110m
Hiking
Hike the 7.1-mile Patapsco Howard County Thru Trail, a moderate route through Patapsco Valley State Park with river views and historical sit
Last updated: February 26, 2026
Tips
Your route passes through protected areas
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Waypoints
Start point
Parking
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3.74 km
Highlight (Segment) • Trail
Tip by
11.4 km
End point
Parking
Way Types & Surfaces
Way Types
8.87 km
2.54 km
< 100 m
Surfaces
8.87 km
2.55 km
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Elevation
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Friday 17 July
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This route was planned by komoot.
The trail is located within Patapsco Valley State Park, which has multiple access points and parking areas. Specific parking details can vary depending on which section of the trail you plan to hike. It's advisable to check the official park website for the most current parking information and directions to trailheads.
Yes, dogs are generally allowed on the trails within Patapsco Valley State Park. However, they must be kept on a leash at all times, and you are responsible for cleaning up after your pet.
The trail can be enjoyed year-round, but spring and fall often offer the most pleasant hiking conditions with mild temperatures and beautiful foliage. Summer can be hot and humid, while winter may bring colder temperatures and potential for snow or ice, requiring appropriate gear.
Yes, Patapsco Valley State Park typically charges an entrance fee. Fees can vary by season, day of the week, and residency. For the most up-to-date information on entrance fees and any potential permit requirements, it's best to consult the official Maryland Department of Natural Resources website: maryland.gov.
The trail offers a varied and challenging terrain. You'll encounter a mix of easy, relatively flat double-track sections, especially along the Patapsco River, as well as considerable hills and climbs along ridges with cutbacks. Some areas can also be wet and muddy, so appropriate footwear is recommended.
The trail traverses diverse landscapes within Patapsco Valley State Park, offering scenic views of the Patapsco River, forests, and open fields. A notable section is the Wood Marr Trail. You'll also find historical elements, such as remnants of the B&O Railroad's original alignment and bridge abutments from the 1830s.
Yes, the Patapsco Howard County Thru Trail is part of an extensive network within Patapsco Valley State Park. It directly covers the Patapsco Traverse (south hiking) and Patapsco Traverse (south mtb) trails entirely, and also intersects with sections of the Patapsco Alt HoCo Thru Trail, Wood-Marr (HoCo Thru Trail), Thru Trail (white), and the River Trail, among others.
Due to its length of over 11 km and moderate difficulty, the full Patapsco Howard County Thru Trail might be challenging for young children or absolute beginners. However, Patapsco Valley State Park offers many shorter, easier trails that are more family-friendly. You can explore specific sections of this trail or other park trails for a less strenuous experience.
Based on its distance and moderate difficulty, completing the entire 11.4 km route typically takes around 3 hours. This duration can vary significantly depending on your pace, the number of stops you make, and current trail conditions.
The area is rich in history, being home to Patapsco Valley State Park, Maryland's oldest state park established in 1907. It was a site for some of Maryland's earliest mills and factories, and notably, America's first common-carrier railroad. Sections of the trail, like the Old Main Line Trail, follow the original 1831 B&O Railroad alignment, with visible historical structures.
Yes, the trail offers varied difficulty. Some sections, particularly those along the Patapsco River, are described as relatively flat and mostly double-track, making them easier. Conversely, areas like the Woodstock section feature considerable hills and climbs along ridges, presenting a more challenging experience. You can choose sections based on your desired difficulty.
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