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Routes
Hiking trails & Routes
United States
Maryland
Baltimore County
Woodlawn

Daniels Access, Powerline and Old Main Line Trail

Routes
Hiking trails & Routes
United States
Maryland
Baltimore County
Woodlawn

Daniels Access, Powerline and Old Main Line Trail

Moderate

4.9

(7131)

17,959

hikers

Daniels Access, Powerline and Old Main Line Trail

04:58

18.0km

310m

Hiking

Embark on the Daniels Access, Powerline and Old Main Line Trail for a moderate hiking experience that spans 11.2 miles (18.0 km) with an elevation gain of 1001 feet (305 metres). You can expect to complete this route in about 4 hours and 58 minutes, moving through lush woodlands and enjoying views of the Patapsco River. The trail offers a diverse journey, blending natural beauty with significant historical remnants, including the fascinating ruins of a 19th-century mill town.

When planning your visit, note that parking is generally available in the Daniels Area, providing convenient access to the trailhead. Be prepared for varied terrain; the Daniels Access Trail features several steep slopes and repeated hills, while the Old Main Line Trail is typically flatter as it follows an old railroad bed. Minor stream crossings are usually shallow, but always check water levels, especially after heavy rain.

This route stands out for its unique blend of natural scenery and rich history, offering more than just a walk in the woods. You will discover old railroad artifacts and an 1800s stone church with an old cemetery, adding a layer of historical exploration to your hike. The abandoned mill town, largely destroyed by floods, provides a compelling glimpse into the past, making this trail a truly distinctive adventure in the region.

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Start point

Parking

Get Directions

1

1.23 km

Pickall Trailhead

Highlight • Trail

2

4.65 km

Camel's Den Cave

Highlight • Cave

Just a few minutes away from Daniels Dam lies "Camel's Den", a nice little cave next to a small stream.

Tip by

7.66 km

Beach

Beach

10.6 km

Beach

Beach

5

14.6 km

This largely undeveloped area of Patapsco provides a scenic location for a ride beneath shaded canopy and along the glorious Patapsco River.

This is a nice place to rest your legs and enjoy a picnic. You could also park up your bike and explore further into the forest.

Tip by

B

18.0 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

15.4 km

1.63 km

535 m

424 m

Surfaces

17.1 km

523 m

282 m

118 m

< 100 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (130 m)

Lowest point (60 m)

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Weather

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Today

Sunday 10 May

26°C

11°C

45 %

Additional weather tips

Max wind speed: 15.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the overall difficulty and terrain like on this route?

This route combines sections with varied terrain. The Daniels Access Trail features several steep slopes and repeated hills, making it a moderate to potentially difficult section. You might encounter minor stream crossings. In contrast, the Old Main Line Trail is generally flat, following an old crushed gravel and dirt railroad bed, which makes it an easier walk suitable for various activity levels.

Is the 'Powerline Trail' an official part of this route?

While the route name includes 'Powerline Trail', it's important to note that a singular 'Powerline Trail' directly integrated with the Daniels Access and Old Main Line Trails in Patapsco Valley State Park isn't explicitly detailed in available information. The route primarily utilizes the Daniels Access Trail and the Old Main Line Trail, which offer a rich hiking experience with varied terrain and notable historical features.

Where can I park to access the trails?

You can typically access the trails from the Daniels Area parking lot within Patapsco Valley State Park. The Daniels Access Trail starts near the railroad tracks at Hollofield Station, which connects to the Daniels Area.

Are dogs allowed on the trails?

Yes, the trails in Patapsco Valley State Park, including the Old Main Line Trail, are generally dog-friendly. The Old Main Line Trail is popular with dog walkers. Please ensure your dog is kept on a leash and that you follow all park regulations regarding pets.

What is the best time of year to hike this route?

The trails can be enjoyed year-round. Spring and fall offer pleasant temperatures and beautiful scenery, with spring bringing wildflowers and fall showcasing vibrant foliage. The Old Main Line Trail, with its lush, green forests, is particularly scenic during warmer months. Be mindful of potential higher water levels at stream crossings on the Daniels Access Trail after heavy rains.

Do I need to pay an entrance fee or get a permit for Patapsco Valley State Park?

Yes, Patapsco Valley State Park, like many Maryland State Parks, typically has entrance fees. These fees can vary by season and day of the week. It's advisable to check the official Maryland Department of Natural Resources website for current fee schedules and any permit requirements before your visit.

What historical features can I see along the way?

The Old Main Line Trail is rich in history, following parts of the original Baltimore & Ohio (B&O) Railroad alignment from 1830. You'll literally be walking on history, encountering remnants of railroad artifacts, including bridge moorings washed out by Hurricane Agnes in 1972, and old stone bridges. The Daniels Area also features ruins of a 19th-century mill town, including massive stone foundations and walls, abandoned cars from the 1950s, and an 1800s stone church with an old cemetery.

What kind of wildlife might I encounter?

The trails run alongside the Patapsco River and through woodlands, offering opportunities to spot various wildlife. Observant hikers on the Old Main Line Trail might see ducks, snakes, and frogs. The area is home to diverse flora and fauna typical of a riverside forest environment.

Does this route connect to other trails?

Yes, the Daniels Access Trail connects to the Church Loop Trail. The overall route also passes through sections of the Patapsco Alt HoCo Thru Trail, Patapsco Traverse (south hiking), Patapsco Traverse (south mtb), Patapsco Howard County Thru Trail, and Patapsco Traverse (north hiking), offering options for extending or modifying your hike.

Is this a loop trail or an out-and-back?

While the specific tour described is a point-to-point route, the Daniels Area trails, including the Daniels Access Trail and Old Main Line Trail, can be combined with others like the Ruins Loop Trail to create diverse loop experiences. This allows you to experience both the flatter, historically rich paths and the more challenging, hilly sections.

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