Patapsco-Thru Trail is a hiking, biking, and horse trail in Baltimore County, Maryland. It is within Patapsco Valley State Park: Pickall Area and Patapsco Valley State Park: Hilton Area. It is 5.7 miles long and begins at 109 feet altitude. Traveling the entire trail is 0.8 miles with a total elevation gain of 321 feet. The Lot A parking, the Old Mill Bakery Café cafe, and the Trolley Stop restaurant are near the trailhead. There is also a bench. The Lot B parking can be seen along the trail. There is also a shingle along the trail.
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