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Bay Circuit Trail

This small section of the Bay Circuit Trail is a 4.3 mile out-and-back trail that goes along the Sudbury Reservoir in Southborough, MA. The hike is mostly flat, with some uphill sections closer to the northern terminus. In autumn, this is one of the best hikes in eastern Massachusetts to see foliage along the water and in a fairly secluded area. This trail gets traffic, mostly in the early mornings and evenings, but is not a very popular spot.

The trail is mostly flat until you reach the northern section near Parmenter Road where the trail shoots uphill before becoming flat again.

Biking
Biking is not allowed on this trail.

Pets
Dogs are not allowed on this trail.
Explore 35 trails near Southborough, MA

Know Before You Go

  • A 4.3-mile out-and-back section of the Bay Circuit Trail in Southborough, MA, offers mostly flat hiking along the Sudbury Reservoir.
  • This section is known for beautiful fall foliage and relative seclusion, but biking and dogs are prohibited.
  • The trail includes some uphill sections near the northern terminus at Parmenter Road.
Interactive topographic map for Bay Circuit Trail located in Southborough, MA. Click the "View Map" button to load GPS coordinates and trail markers.
Get directions
Distance
4.3 mi
Difficulty
Easy
Type
Out-and-Back
Est. Time
2.2 hrs
Elev. Gain
338'
Rating
3.0
Added
March 21, 2015
Updated
October 08, 2023

Weather Forecast

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Total Change
67'
Ascent
338'
Descent
338'
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Download the GPX Data for Offline Use

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Features

Vista / Lookout Point
Water Source

Points of interest

  1. Parking

    42.310894, -71.491653
  2. Main Trailhead

    42.310889, -71.491846

Safety information

For your own safety: plan ahead, let someone know where you'll be, and hike at your own risk.

Availability

All seasons

Surface type

Dirt

Trip Reports (Reviews)

Rated 3.0 out of 5 based on 1 rating.

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4.0 miles / 6.4 km
March 28, 2015
Hiking
No community routes found. To add your own hike as a Community Route for this Trail guide, leave a Trip Report with an attached GPX file.

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