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Hiking trails & Routes
United States
Massachusetts
Middlesex County

Great Brook Tophet Swamp Loop

Easy

4.8

(3155)

13,476

hikers

Great Brook Tophet Swamp Loop

01:37

6.36km

20m

Hiking

Hike the easy 4.0-mile Great Brook Tophet Swamp Loop in Great Brook Farm State Park, featuring varied terrain, wetlands, and Wolf Rock.

Last updated: February 26, 2026

Waypoints

A

Start point

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1

553 m

Great Brook Farm State Park

Highlight • Forest

A working farm in Carlisle, MA, Great Brook Farm State Park encompasses over 1,000 acres. With more than 20 miles of peaceful trails, delicious ice cream from the farm's dairy, …

Tip by

2

5.81 km

A working farm in Carlisle, MA, Great Brook Farm State Park encompasses over 1,000 acres. With more than 20 miles of peaceful trails, delicious ice cream from the farm's dairy, …

Tip by

3

6.06 km

Great Brook Farm

Highlight • Rest Area

Great Brook Farm boasts a range of facilities, including walking trails, a working dairy farm, and a visitor's center. The scenic landscape provides stunning views of meadows and woodlands and …

Tip by

4

6.20 km

Cellar Holes

Highlight • Historical Site

This is one of a couple spots in the park where you can see Cellar Holes from mill sites where early settlers worked in the 17th century.

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B

6.36 km

End point

Parking

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Way Types & Surfaces

Way Types

3.53 km

1.82 km

767 m

239 m

Surfaces

4.49 km

917 m

461 m

349 m

125 m

< 100 m

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Elevation

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Saturday 6 June

29°C

14°C

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Frequently Asked Questions

What is the overall difficulty and terrain like on the Great Brook Tophet Swamp Loop?

While komoot rates this loop as 'easy', it's considered more challenging than many other trails within Great Brook Farm State Park. You can expect narrower, rougher paths with hills, twists, and turns. The terrain often features extensive views of swamps and wetlands, and some sections have significant rocks and roots underfoot. There is also a boardwalk section on Tophet Loop East.

Are there any notable features or points of interest along the route?

Yes, a significant feature is Wolf Rock, a formation of three large rocks rumored to have been a den for the last wolves in Carlisle. You'll also pass by the Beaver Pond in Great Brook Farm State Park and historical Cellar Holes. The trail offers extensive views of swamps and wetlands, showcasing a variety of fern species and red maples.

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

The trail can be enjoyed in various seasons. Spring and fall offer pleasant temperatures and vibrant foliage. Due to its wetland characteristics, be prepared for potentially muddy sections, especially after rain or during thaw. The trail is not part of the park's ski-touring routes, offering a different perspective during winter months, though conditions may be rougher.

Is the Great Brook Tophet Swamp Loop dog-friendly?

Yes, the trail is dog-friendly. You might encounter other dog walkers along the route. Always ensure your dog is leashed and that you clean up after them to preserve the natural environment for everyone.

Where can I park to access the trailhead?

Parking is available within Great Brook Farm State Park. Specific parking areas for the Tophet Swamp trails are typically well-marked. Check the park's official website or signage upon arrival for the most current parking information and regulations.

Do I need a permit or is there an entrance fee for Great Brook Farm State Park?

Great Brook Farm State Park, where this loop is located, generally has a parking fee. This fee contributes to the maintenance of the park facilities and trails. It's advisable to check the official Massachusetts DCR website (or similar state park authority) for current fee schedules and any specific permit requirements before your visit.

Does this trail intersect with other paths in the park?

Yes, the route incorporates sections of several other official trails within Great Brook Farm State Park. You will traverse parts of Pine Point Loop, Heartbreak Ridge, Keyes Loop, Tophet East, and Tophet West, offering a diverse hiking experience.

How long does it typically take to complete the Great Brook Tophet Swamp Loop?

The loop is approximately 6.4 kilometers (4 miles) long and typically takes around 1 hour and 37 minutes to complete at a moderate hiking pace. This duration can vary based on your fitness level, the number of stops you make, and trail conditions.

Is the trail generally crowded?

The Tophet Swamp trails are generally less frequented than other main trails within Great Brook Farm State Park. This offers a more secluded and quiet hiking experience, though you may still encounter other hikers or dog walkers.

What kind of wildlife might I see on the Great Brook Tophet Swamp Loop?

Given the extensive wetlands and forested uplands, you have a good chance of spotting various bird species, especially near the Beaver Pond. Keep an eye out for smaller mammals common to New England forests. The 'Wolf Rock' feature also hints at the historical presence of larger wildlife in the area.

Are there any facilities available near the trailhead?

Yes, the trail is located within Great Brook Farm State Park, which includes Great Brook Farm. The farm often has restrooms and sometimes offers refreshments or ice cream, depending on the season and operating hours. Check their website for current offerings.

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