Union Dam Trail
Explore the Scenic Union Dam Trail
Discover the Patapsco-Thru Trail Loop in Catonsville, Maryland - a stunning park with scenic trails, wildlife, and picturesque views of the Patapsco River.
Nestled in the heart of Catonsville, the Patapsco-Thru Trail Loop offers tourists a breathtaking escape into nature. This scenic park features a variety of hiking trails, picturesque views of the Patapsco River, and abundant wildlife, making it a perfect spot for outdoor enthusiasts and families alike. With well-marked paths and serene surroundings, visitors can immerse themselves in the beauty of Maryland’s landscapes while enjoying a tranquil day outdoors.
Opening times, essentials, and a few local tips gathered into one calmer, easier-to-scan planning section.
Car
If you are driving, start from the main entrance to Patapsco Valley State Park. Head southeast on Baltimore National Pike (US-40) toward the park entrance. Continue on the main park road, following the signs for the Patapsco-Thru Trail Loop. Park in the designated parking area located near the trailhead. Note that there may be a parking fee of $3 per vehicle for daily access.
Public Transportation
For those using public transportation, take the MARC Train to the Elkridge station. From there, you can use local bus services (check the schedule for any routes that go towards Catonsville or directly to Patapsco Valley State Park). Once at the park, follow the signs to the Patapsco-Thru Trail Loop. Be sure to check the bus schedule for return trips to ensure you can make it back after your hike.
Walking
If you are already within the Patapsco Valley State Park, to reach the Patapsco-Thru Trail Loop, look for the signs that guide you to the trailhead. The loop starts near the parking area. You may need to walk along the park road for a short distance, approximately 0.2 miles, before you reach the trail entrance. It is a well-marked path, and the scenery is beautiful.
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Explore the natural beauty and historical charm of Patapsco Valley State Park, Maryland's premier destination for outdoor adventures and family-friendly activities.
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