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Hiking trails & Routes
United States
Massachusetts
Middlesex County

Acorn and Fern Loop

Easy

3.3

(3)

73

hikers

Acorn and Fern Loop

01:46

6.61km

70m

Hiking

Hike the easy 4.1-mile Acorn and Fern Loop in Great Brook Farm State Park, gaining 241 feet over 1 hour and 45 minutes.

Last updated: February 26, 2026

Waypoints

A

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B

6.61 km

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Way Types & Surfaces

Way Types

5.72 km

855 m

< 100 m

< 100 m

Surfaces

5.75 km

828 m

< 100 m

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Elevation

Elevation

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Weather

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Today

Friday 5 June

31°C

13°C

0 %

Additional weather tips

Max wind speed: 11.0 km/h

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Frequently Asked Questions

How long does it typically take to hike this loop?

The Acorn and Fern Loop is approximately 6.6 kilometers (4.1 miles) long. Hikers generally complete it in about 1 hour and 45 minutes, though this can vary based on pace and how often you stop to enjoy the scenery.

Is the trail suitable for beginners or families with children?

Yes, this route is rated as easy, making it suitable for beginners and families. The gentle elevation changes and well-defined path offer a pleasant experience for most fitness levels. However, always ensure children are supervised, especially near any water features or uneven sections.

What is the best time of year to visit Great Brook Farm State Park for this hike?

The Acorn and Fern Loop is enjoyable throughout the year. Spring offers lush greenery and blooming wildflowers, while autumn provides spectacular fall foliage. Summer is popular for its warm weather, and winter can be beautiful for snowshoeing or cross-country skiing, though trail conditions may vary.

Where can I park, and where does the trail start?

Parking is available at Great Brook Farm State Park. The trail typically starts and ends near the main parking areas within the park. Specific trailhead signs will guide you to the beginning of the Acorn and Fern Loop.

Are dogs allowed on the Acorn and Fern Loop?

Yes, dogs are generally welcome on trails within Great Brook Farm State Park, including the Acorn and Fern Loop. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all visitors.

Does the trail intersect with other paths?

Yes, the Acorn and Fern Loop utilizes sections of several official trails within Great Brook Farm State Park. You'll find yourself on parts of the Acorn Trail, Fern Loop, and Acorn South during your hike.

What is the terrain like on the Acorn and Fern Loop?

The terrain is generally well-maintained and easy to navigate. Expect a natural ground surface, potentially with some roots or small rocks, typical of a woodland trail. The route has minimal elevation changes, making for a comfortable walk.

Are there any entrance fees or permits required for Great Brook Farm State Park?

Great Brook Farm State Park typically has a parking fee for vehicles. This fee contributes to the maintenance of the park's facilities and trails. It's advisable to check the official Massachusetts DCR website (mass.gov/dcr) for current fee schedules and any specific permit requirements before your visit.

What kind of natural features or scenery can I expect?

The loop takes you through a pleasant woodland environment, characterized by a mix of deciduous and coniferous trees. You'll encounter areas with ferns and, depending on the season, might spot acorns from oak trees. The park is known for its tranquil natural beauty.

What should I pack for a hike on this trail?

For an easy hike like this, comfortable walking shoes are essential. We recommend bringing water, especially on warmer days, and perhaps a light snack. Depending on the weather, a light jacket or rain gear might be useful. Don't forget your camera to capture the scenic beauty!

Are there any viewpoints or notable landmarks along the route?

While the Acorn and Fern Loop doesn't feature dramatic mountain vistas, it offers serene woodland views and the peaceful ambiance of Great Brook Farm State Park. The trail itself is the main attraction, providing a lovely immersion in nature rather than specific 'landmarks'.

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