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United States
Maryland
Baltimore County
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Merryman's Mill Trail Loop

Moderate

4.8

(5005)

6,855

runners

Merryman's Mill Trail Loop

01:49

14.6km

230m

Running

Jog the 9.1-mile Merryman's Mill Trail Loop, a moderate route with 762 feet of elevation gain, offering reservoir views and historic ruins.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

Get Directions

1

2.26 km

Little waterfall

Highlight • Waterfall

The trail crosses the creek here on an elevated stone outcrop from which the water cascades down a series of small falls until it spills into Loch Raven.

Tip by

2

4.20 km

Merryman's Mill Point Trail

Highlight (Segment) • Trail

The trail is a beautiful dirt singletrack through lush forest that approaches the waters of Loch Raven where it intersects the power line trail.

Tip by

3

8.12 km

Warren Trailhead

Highlight • Trail

There is roadside parking here and access to the Loch Raven trail system on both sides of Warren Road. The singletrack trails are beautiful and exploring the side paths is a great way to avoid trail traffic in more popular seasons.

Tip by

B

14.6 km

End point

Parking

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Way Types & Surfaces

Way Types

11.6 km

2.97 km

Surfaces

9.92 km

2.62 km

2.08 km

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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 (140 m)

Lowest point (70 m)

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Weather

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Today

Sunday 10 May

26°C

9°C

35 %

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

Where can I park to access the Merryman's Mill Trail Loop?

The trail can be accessed from various points around Loch Raven Reservoir. A common starting point is the Warren Trailhead. It's always a good idea to check local signage for specific parking regulations and availability.

Is the Merryman's Mill Trail Loop dog-friendly?

Yes, dogs are permitted on the Merryman's Mill Trail Loop. Please ensure your dog is kept on a leash and that you clean up after them to help keep the trail enjoyable for everyone.

What's the best time of year to jog the Merryman's Mill Trail Loop?

The trail offers beautiful scenery year-round. Spring and fall provide pleasant temperatures and vibrant foliage, making them ideal. Summer can be warm but offers lush green views, while winter can be serene, though some sections might be muddy or icy. The 'leafy tunnel' effect is particularly striking in spring and fall.

Are there any permits or fees required for the Merryman's Mill Trail Loop?

The Merryman's Mill Trail Loop is located within the Loch Raven Reservoir Cooperative Wildlife Management Area. Generally, there are no specific permits or entrance fees required for public access to the trails. However, it's always wise to check the official Loch Raven Reservoir regulations for any updates or specific activities that might require permits.

What kind of terrain can I expect on the Merryman's Mill Trail Loop?

The terrain is quite varied, offering a diverse experience for joggers. You'll encounter a mix of doubletrack and fire roads, as well as beautiful dirt singletrack through lush forest. Some sections feature soft, cushy ground from leaves. There are rolling hills to climb, and you might even come across unique elements like a 'rock mat' and well-engineered bridges.

How challenging is the Merryman's Mill Trail Loop for jogging?

The difficulty can vary significantly depending on the specific route you choose. While some shorter loops (around 3.3 miles) are described as 'easy' with moderate elevation gain, longer versions (up to 9.2 miles or more) can become 'steep and challenging at times' and might not be recommended for beginners. The main route is generally considered moderate for jogging.

What natural features and historical landmarks will I see along the Merryman's Mill Trail Loop?

The trail is rich in both natural beauty and history. You'll enjoy picturesque views across the Loch Raven Reservoir and pass through a 'leafy tunnel' of forest, often winding along the waterside. Keep an eye out for the Little waterfall. Historically, you can discover the ruins and cemetery of the Merryman family's historic mill, along with stone foundations, walls, and chimneys from the old estate.

Does the Merryman's Mill Trail Loop connect with other trails?

Yes, the route incorporates sections of several other trails. You'll find yourself on parts of the Merryman's Mill Trail (Lower), Merryman's Mill Trail, Merryman's Mill Trail (Powerline), and the Shore Trail, among others. This network allows for varied loop options and extended exploration.

Are there any specific sections of the trail that are particularly scenic?

Absolutely! Many parts of the trail offer stunning views. The sections that wind along the waterside, sometimes right at water level, are particularly scenic, providing expansive vistas across the Loch Raven Reservoir. The 'leafy tunnel' through the lush forest also offers a beautiful, immersive experience.

What should I bring for a jog on this trail?

Given the varied terrain and potential for longer distances, we recommend bringing appropriate jogging shoes with good grip, water to stay hydrated, and perhaps a small snack. Depending on the season, layers of clothing are advisable. A map or GPS device is also helpful, as the trail intersects with many others.

How long does it typically take to complete the Merryman's Mill Trail Loop for jogging?

The duration can vary based on your pace and the specific loop you choose. For the main route, which is about 14.6 km (9.1 miles), a typical jogging duration is around 1 hour and 48 minutes. However, shorter loops exist, and your personal fitness level will also influence the time taken.

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