Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Routes
Hiking trails & Routes
Middlesex County
Marlborough

Bay Circuit and Boroughs Loop Trail

Easy

Bay Circuit and Boroughs Loop Trail

00:32

2.04km

10m

Hiking

Hike the easy 1.3-mile Bay Circuit and Boroughs Loop Trail, offering views of the Sudbury Reservoir Watershed.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

Get Directions

1

1.97 km

Sudbury Reservoir Watershed

Highlight • Lake

Sudbury Reservoir is a large freshwater lake situated about 25 miles west from Boston in Massachusetts.

A well maintained path spans the entire length of the reservoir which is surrounded by second-growth mixed forest with stands of Red Pine.

Tip by

B

2.04 km

End point

Loading

Way Types & Surfaces

Way Types

2.04 km

Surfaces

245 m

Sign up to see more specific route details

Sign up for free

Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Sign up to see more specific route details

Sign up for free

Weather

Powered by Foreca

Friday 10 July

31°C

21°C

-- %

Additional weather tips

Max wind speed: -- km/h

to get more detailed weather forecasts along your route

Comments

guide_signup

Want to know more?

Sign up for a free komoot account to join the conversation.

Sign up for free

This route was planned by komoot.

Save

Edit route

Download GPX

Move start point

Print

Share

Embed on a website

Report an Issue

Report restricted access

Frequently Asked Questions

How long does it typically take to hike this trail?

This loop trail is relatively short and easy. Most hikers can complete the entire route in about 30-35 minutes, making it perfect for a quick outing.

Is this trail suitable for beginners or families with young children?

Yes, with its 'easy' difficulty grade, minimal elevation changes, and short distance, this trail is very suitable for beginners and families looking for a gentle outdoor experience.

What is the terrain like on the Bay Circuit and Boroughs Loop Trail?

The trail primarily winds through wooded areas, offering a pleasant and mostly flat walking surface. You'll experience diverse natural beauty, including views of the Sudbury Reservoir Watershed and other waterways.

What can I see along the route?

As you hike, you'll enjoy scenic views of the Sudbury Reservoir Watershed. The trail also passes through forested sections, offering a peaceful natural setting. Keep an eye out for local wildlife and diverse plant life typical of Eastern Massachusetts.

Does this trail intersect with other well-known paths?

Yes, this route is part of the larger Bay Circuit Trail network. You'll be hiking on sections of the Bay Circuit Trail for a significant portion of the loop.

Is the Bay Circuit and Boroughs Loop Trail dog-friendly?

No, dogs are generally not permitted on this specific segment of the trail, particularly the Bay Circuit/Boroughs Loop Connector Trail in Southborough. Please check local signage for any specific regulations before bringing your pet.

Do I need a permit or is there an entrance fee to access the trail or the Sudbury Reservoir Watershed area?

There are no specific permits or entrance fees required to hike this section of the Bay Circuit Trail. However, as it passes through the Sudbury Reservoir Watershed, please respect all regulations regarding water quality protection and conservation.

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

The trail is enjoyable in most seasons. Spring offers lush greenery and blooming wildflowers, while autumn provides stunning fall foliage. Summer is pleasant for a shaded walk, and winter can be beautiful for snowshoeing or cross-country skiing, though conditions may vary.

Where can I park to access the Bay Circuit and Boroughs Loop Trail?

Specific parking information for this exact loop can vary. Given its location within the Sudbury Reservoir Watershed and its connection to the Bay Circuit Trail, look for designated parking areas near trailheads in Southborough. Always check local town websites like southboroughma.gov for the most current parking details and regulations.

Are there any specific regulations to be aware of when hiking in the Sudbury Reservoir Watershed?

Yes, as the trail is within the Sudbury Reservoir Watershed, it's crucial to follow all watershed protection rules. This typically includes staying on marked trails, packing out all trash, and respecting wildlife. Motorized vehicles are generally prohibited on many parts of the Bay Circuit Trail.

What should I wear or bring for a hike on this trail?

Given its easy difficulty and short length, comfortable walking shoes are sufficient. Dress in layers appropriate for the weather, and consider bringing water, especially on warmer days. Insect repellent can be useful during warmer months.

Nearby routes

Easy

5.0

76

Chestnut Hill Reservoir Trail

00:50h

3.26km

10m

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepackingSitemap
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy