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Hiking trails & Routes
United States
Massachusetts
Middlesex County
Cambridge

Alewife Brook Greenway Loop

Easy

3.2

(25)

57

hikers

Alewife Brook Greenway Loop

01:27

5.74km

10m

Hiking

The Alewife Brook Greenway Loop offers a delightful journey through a sprawling urban forest, providing a peaceful retreat right within Cambridge, Arlington, and Somerville. You'll wander along a mix of paved paths, stone-dust trails, and raised boardwalks that traverse wetlands, where lily pads often dot the water. Following the gentle curves of the Alewife Brook and the Little River, this route delivers a surprising amount of natural beauty, especially when the native asters and Virginia Creeper burst into color in autumn.

This easy 3.6-mile (5.7 km) hike, with a minimal 40 feet (12 metres) of elevation gain, typically takes around 1 hour and 27 minutes to complete. It's highly accessible via public transportation, with the MBTA Red Line's Alewife Station providing direct access and parking. The trail is a multi-use path, so expect to share it with cyclists and dog walkers, making it a lively community space.

More than just a trail, the Alewife Brook Greenway Loop is a vital wildlife corridor, offering a habitat for numerous indigenous and migratory birds, including osprey and great blue heron. Its constructed wetlands near Alewife Station are among New England's largest, playing a crucial role in stormwater management while providing scenic trails. The route also serves as a key connector to other regional paths like the Minuteman Bikeway and the Mystic River Paths.

Last updated: June 9, 2026

Waypoints

A

Start point

Train Station

Get Directions

1

280 m

Alewife Brook Reservation

Highlight • Forest

Alewife Brook Reservation is a 120-acre urban wild in Cambridge and Arlington, Massachusetts, offering a surprising mix of wetlands, woodlands, and paved paths near the Alewife T station. It’s a key green corridor along the Minuteman Bikeway and Fitchburg Cutoff Path, making it popular with cyclists, runners, and commuters. Boardwalks and footpaths wind through marshes where you can spot red-winged blackbirds, herons, and turtles. The reservation also plays a vital role in local flood control and wildlife habitat. While not remote, it offers a welcome dose of nature in the city and easy access to larger trail networks in the region.

Tip by

2

2.15 km

Alewife Brook Greenway

Highlight (Segment) • Trail

The Alewife Brook Greenway is a mixed surface trail through a busy, built up area. The trail connects the Mystic Way and Minuteman paths so you can get quite a few miles in on some well maintained trails by the river or through some parks and wooded areas.

Tip by

B

5.74 km

End point

Train Station

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Way Types & Surfaces

Way Types

5.42 km

178 m

130 m

Surfaces

2.61 km

1.31 km

763 m

688 m

296 m

< 100 m

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Elevation

Elevation

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Weather

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Today

Sunday 5 July

29°C

20°C

15 %

Additional weather tips

Max wind speed: 15.0 km/h

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Frequently Asked Questions

How long does it typically take to complete the Alewife Brook Greenway Loop?

The Alewife Brook Greenway Loop is an easy hike that generally takes about 1 hour and 27 minutes to complete. This duration is for hiking and can vary depending on your pace and how often you stop to enjoy the scenery.

What is the terrain like on this trail?

The trail features a varied and generally flat terrain, making it accessible for many. You'll encounter a mix of paved sections, stone-dust paths, and raised boardwalks that bridge low wetlands or rise to meet major streets. Some parts of the path run along the cement-lined sides of Alewife Brook.

Is the Alewife Brook Greenway Loop suitable for families and children?

Yes, this loop is considered an easy trail with flat, mixed surfaces, making it very suitable for families. Its accessibility and varied scenery, including wetlands and urban forest, offer an enjoyable experience for all ages.

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

The Alewife Brook Greenway Loop passes through the Alewife Brook Reservation, a sprawling urban forest. You can spot various bird species, including osprey, great blue heron, and woodcock. The wetlands are filled with lily pads and other water plants, and in autumn, native plants like asters and Virginia Creeper add vibrant color. The reservation is also an important habitat for indigenous and migratory birds, and its ponds serve as spawning grounds for anadromous herring.

Does the trail connect to other paths?

Yes, the Alewife Brook Greenway is a significant multi-use path that connects to several other regional trails. These include the Minuteman Bikeway, the Fitchburg Cutoff Path (part of the Mass Central Rail Trail), and Alewife Linear Park.

What is the best time of year to visit the Alewife Brook Greenway Loop?

The trail is enjoyable year-round, but autumn is particularly beautiful when native plants like asters and Virginia Creeper display vibrant colors. Spring and summer offer lush greenery and active wildlife, while winter can provide a peaceful, snowy landscape, though conditions may vary.

Are dogs allowed on the Alewife Brook Greenway Loop?

Yes, the Alewife Brook Greenway Loop is generally dog-friendly. However, it's always best to keep your dog on a leash and practice responsible pet ownership by cleaning up after them to ensure a pleasant experience for all users.

Are there any permits or entrance fees required for the Alewife Brook Reservation?

No, there are typically no permits or entrance fees required to access the Alewife Brook Reservation or to hike the Alewife Brook Greenway Loop. It is a publicly accessible urban park.

Where can I park to access the Alewife Brook Greenway Loop?

While specific parking lots are not detailed, the trail is located in an urban area. You can often find parking in designated areas near the Alewife Brook Reservation or along adjacent streets. Public transportation options are also available to reach the vicinity of the trail.

What should I bring for a hike on this trail?

Given its easy difficulty and mixed terrain, comfortable walking shoes are recommended. Depending on the weather, bring water, sun protection, and perhaps a light jacket. If you plan to observe wildlife, binoculars could be a good addition. As it's a multi-use path, be mindful of bikers and runners.

Are there any unique features or landmarks along the route?

Beyond the natural beauty of the wetlands and urban forest, the trail features a storm water management wetland constructed in 2013. This area includes an amphitheater, interpretive signage, overlooks, and additional boardwalks, linking different sections of the bike paths and offering educational insights into the local ecosystem.

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