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Hiking trails & Routes
United States
Maryland
Baltimore County
Catonsville

Soapstone and Grist Mill Trail Loop

Moderate

4.9

(2743)

8,375

hikers

Soapstone and Grist Mill Trail Loop

02:29

9.39km

90m

Hiking

The Soapstone and Grist Mill Trail Loop offers a delightful contrast, starting with a leisurely paved path alongside the Patapsco River before diving into a more rugged forest experience. You'll enjoy picturesque riverside views, spot historical ruins, and then ascend into shaded hardwood forests on singletrack, where the sounds of nature take over. Keep an eye out for local birds and butterflies as you navigate the varied terrain, which can include some steep and muddy sections.

To make the most of your visit, plan for potential muddy spots on the Soapstone Trail, especially after wet weather, and be prepared to share the path with mountain bikers. While specific parking information isn't detailed, the trail is located within Patapsco Valley State Park, a popular destination. An early start is always a good idea to secure parking and enjoy the tranquility before crowds gather.

This moderate 5.8-mile (9.4 km) hike, with a manageable 295 feet (90 metres) of elevation gain, typically takes around 2 hours and 29 minutes. It's a fantastic choice for those seeking a diverse outdoor experience, blending natural beauty with historical elements like the old flour mill ruins. The trail's interconnectedness with other routes in Patapsco Valley State Park also offers opportunities to extend your adventure if you're feeling ambitious.

Last updated: June 9, 2026

Tips

Temporary access restrictions

Includes segments with temporary access restrictions. Check ahead to confirm restricted segments are open to the public.

After 2.60 km for 58 m

Waypoints

A

Start point

Parking

Get Directions

1

4.92 km

Swinging Bridge, Patapsco Valley State Park

Highlight • Bridge

This popular swinging bridge crosses the Patapsco River. It is a wooden suspension bridge with metal cables.

On the bridge you'll have great views of the river and surrounding woodland.

It isn't too high up, so even if you're afraid of heights it's still worth passing over the bridge. Be courteous of other pedestrians as the bridge is fairly narrow!

Tip by

2

5.04 km

The Patapsco River flows through central Maryland and into the Chesapeake Bay.

The river is known as the River of History as it played an essential role in Maryland's Industrial Revolution that began towards the end of the 18th century.

The river flows through the Patapsco Valley State Park, winding through woodland and open countryside. There are a few good wild swimming spots too!

Tip by

3

6.80 km

Vineyard Spring Trailhead

Highlight • Trail

There's a little tunnel under the railway tracks that marks the start of the Vineyard Spring Trail.

Tip by

4

7.37 km

Lost Lake

Highlight • Lake

Lost Lake is a small lake just north of the Patapsco River within Patapsco Valley State Park's Glen Artney Area. The lake often has various species of birds and vegetation to look at while you ride.

Tip by

B

9.39 km

End point

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Way Types & Surfaces

Way Types

7.67 km

1.36 km

223 m

120 m

< 100 m

Surfaces

3.82 km

2.96 km

2.27 km

304 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 (90 m)

Lowest point (10 m)

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Weather

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Today

Friday 17 July

33°C

22°C

0 %

Additional weather tips

Max wind speed: 11.0 km/h

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Frequently Asked Questions

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

The Soapstone and Grist Mill Trail Loop is generally considered easy to moderate. The Grist Mill Trail section is a paved, accessible pathway running parallel to the Patapsco River. In contrast, the Soapstone Trail can be more challenging, with winding, uneven terrain and some sections described as wild and almost unmaintained, especially at the beginning. Proper footwear is recommended for the unpaved sections.

How long does it typically take to hike the Soapstone and Grist Mill Trail Loop?

Hikers usually complete the full loop in approximately 1 hour and 52 minutes to 2 hours and 37 minutes, depending on pace and stops. The total distance is about 8.6 kilometers (5.3 miles).

Is the trail dog-friendly?

Yes, the Soapstone and Grist Mill Trail Loop is dog-friendly. Please ensure your dog remains on a leash throughout your hike, as is customary in Patapsco Valley State Park.

What are the parking options for accessing the trail?

While specific parking areas aren't detailed, the trail is located within Patapsco Valley State Park. You'll typically find designated parking lots within the park that provide access to various trailheads, including those for the Soapstone and Grist Mill Trails. It's advisable to check the park's official website for the most current parking information and any potential fees.

Are there any entrance fees or permits required for Patapsco Valley State Park?

As the trail is located within Patapsco Valley State Park, there may be entrance fees, especially during peak seasons or on weekends. It's always best to check the official Maryland Department of Natural Resources website for the most up-to-date information on park entrance fees and any permit requirements.

What kind of scenery and natural features can I expect to see?

The loop offers diverse scenery, including lush forests, a creek, and the Patapsco River. You'll encounter large Sycamore trees along the Grist Mill Trail and marshland. In spring, expect abundant flowering plants like Blackhaws, Dogwoods, and Jack-in-the-pulpits. Keep an eye out for wildlife such as deer and various bird species like Cardinals and Red-tailed Hawks. You might also catch glimpses of a Lost Lake.

What historical points of interest are along the route?

The trail features several historical elements, including the ruins of an old flour factory. A notable highlight is the Swinging Bridge, Patapsco Valley State Park (also known as the Swinging Bridge and Patapsco Riverbank), which workers used daily in the 1800s. Parts of the trail also pass through tunnels beneath railroad tracks, adding to the unique experience.

When is the best time of year to hike this trail?

The trail is beautiful year-round, but spring is particularly enchanting due to the abundant flowering plants. Fall also offers stunning foliage. Summer can be warm, while winter hikes are possible but may require checking for icy conditions on certain sections.

Does this trail intersect with other paths?

Yes, the route incorporates significant sections of the Grist Mill Trail and the Soapstone trail. It also briefly touches upon the Vineyard Spring Trail and the Bull Run Trail.

Is the Soapstone and Grist Mill Trail Loop suitable for trail running or mountain biking?

Yes, this loop is also popular for trail running and mountain biking. Hikers should be aware of bikers, who are generally courteous and will often alert you to their presence. The paved Grist Mill section is particularly well-suited for these activities.

What should I bring for a hike on this loop?

Given the varying terrain, it's advisable to bring proper hiking shoes, especially for the unpaved and potentially wild sections of the Soapstone Trail. Water, snacks, and navigation tools (like the komoot app) are always recommended. If hiking with a dog, remember their leash and water.

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