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Hiking trails & Routes
United States
Massachusetts
Middlesex County
Waltham

Upper Charles River Reservation loop via Flowed Meadow Conservation Area

Routes
Hiking trails & Routes
United States
Massachusetts
Middlesex County
Waltham

Upper Charles River Reservation loop via Flowed Meadow Conservation Area

Moderate

5.0

(1850)

19,975

hikers

Upper Charles River Reservation loop via Flowed Meadow Conservation Area

03:54

15.1km

80m

Hiking

Hike a moderate 9.4-mile loop through Waltham's Upper Charles River Reservation and Flowed Meadow Conservation Area, offering diverse scener

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Barnes Honorary Greenway

Forest Grove Park

Upper Charles River Reservation

Waypoints

A

Start point

Parking

Get Directions

1

2.89 km

Flowed Meadow Conservation Area

Highlight • Natural

Flowed Meadow Conservation Area, in Waltham, is a serene haven. Its meandering trails, wetlands, and diverse flora and fauna offer a tranquil escape for nature lovers.

Tip by

2

7.53 km

Upper Charles River Reservation, a Massachusetts gem, flows along the river's edge. With scenic paths, kayaking, and vibrant wildlife, it's a serene escape where nature's beauty offers abundant recreational opportunities.

Tip by

B

15.1 km

End point

Parking

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Way Types & Surfaces

Way Types

5.32 km

3.95 km

3.59 km

2.11 km

< 100 m

< 100 m

Surfaces

6.42 km

4.47 km

2.36 km

1.47 km

374 m

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Elevation

Elevation

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Weather

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Today

Wednesday 8 July

28°C

15°C

0 %

Additional weather tips

Max wind speed: 9.0 km/h

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Frequently Asked Questions

Where can I park to access the Upper Charles River Reservation loop via Flowed Meadow Conservation Area?

Parking is available at various points along the Charles River Reservation. For direct access to the Flowed Meadow Conservation Area, the West Pine Street parking lot is a good option, offering access to generally accessible trails.

Is public transport available to reach the trailhead?

While the sources don't specify direct public transport to a single trailhead for this combined loop, the Upper Charles River Reservation is located in Waltham, which is served by public transportation. You would need to check local bus routes or commuter rail schedules to see which stops are closest to your intended starting point along the reservation or near Flowed Meadow Conservation Area.

Is this loop dog-friendly?

Yes, both the Upper Charles River Reservation and Flowed Meadow Conservation Area are generally dog-friendly. Please ensure your dog is kept on a leash and that you clean up after them to preserve the natural environment for all visitors.

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

The loop offers different experiences throughout the year. Fall is particularly beautiful with changing leaf colors along the Charles River. Winter can offer opportunities for spotting bald eagles in Flowed Meadow Conservation Area. Spring and summer provide lush greenery and active wildlife. Be prepared for varied trail conditions, especially in Flowed Meadow, which can be wet.

Are there any permits or entrance fees required for this trail?

No, there are no specific permits or entrance fees required to access the Upper Charles River Reservation or Flowed Meadow Conservation Area. These are public recreational areas.

What is the terrain like on this loop?

The terrain is quite diverse. Sections along the Upper Charles River Reservation feature easy, flat, paved paths suitable for various activities. In contrast, Flowed Meadow Conservation Area offers more natural, unpaved trails that can be uneven, rocky, or rooty, with gently graded wooded sections and elevated plank "bog bridges" over wetlands. The combination makes for a varied hiking experience.

What kind of scenery and wildlife can I expect to see along the route?

You'll enjoy picturesque riverside views along the Charles River, often with swans, ducks, and geese. Flowed Meadow Conservation Area offers diverse aquatic ecosystems, wetlands, and wooded areas, making it excellent for birdwatching. Keep an eye out for coyotes, foxes, reptiles, and various bird species, including bald eagles in winter. The fall foliage is also particularly stunning.

Are there any specific highlights or landmarks along the way?

Yes, key highlights include the scenic Upper Charles River Reservation itself, with its river views and shaded paths. The Flowed Meadow Conservation Area is notable for its unique wetlands, glacial kettle hole, and diverse ecosystems. You'll also pass by the Moody Street Dam with city overlooks.

Does this loop connect with other trails?

Yes, this route incorporates sections of several other trails. You'll find yourself on parts of the Boston Marathon trail, Charles River Path, Marty Sender Greenway, Riverwalk, Commonwealth Avenue, Charles River Greenway, Squire Bridge, Swamp Trail, Picnic Area, Mary Hunnewell Fyffe Footbridge, and Fenton Path.

Is this loop suitable for families with children?

The loop offers a mix of terrains. The paved sections along the Charles River are very family-friendly and accessible. However, the Flowed Meadow Conservation Area has more rugged, natural trails with uneven surfaces and bog bridges, which might be more challenging for very young children or strollers. Consider the overall length and difficulty when planning with a family.

Are there any sections of the trail that are particularly challenging or require special attention?

The transition from the paved Charles River paths to the natural trails of Flowed Meadow Conservation Area marks a change in difficulty. Flowed Meadow's trails can be steep, uneven, rocky, or rooty, and feature elevated plank "bog bridges." While volunteers have improved passability, these sections require more attention and appropriate footwear, especially after rain.

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