Cleanup - group photo

Annual Charles River Cleanup

Recognized by American Rivers as one of the largest river clean-ups in the country, the Charles River Clean-up will host thousands of volunteers in the Charles River Watershed to help remove litter and clean-up our waterways. Your support will make a huge impact on the river's health!

Open space needs your help

Protecting and preserving takes time, energy and your support.

Please consider a donation to help protect and preserve open space in Waltham.

Thank you!

Volunteers working on a trail

A Commitment to Open Space

The Waltham Land Trust: Protecting, preserving and connecting since 1999

Middlesex County Hospital trail map

Get out on the trails

You can hear the trails calling your name... go for a walk!

News

Waltham’s green spaces thrive thanks to Waltham Land Trust 

August 3, 2025

Mindfullness at Stonehurst

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Japanese Knotweed Removal Party, June 21, 2025

July 5, 2025

Twenty WLT volunteer trail stewards and members of the general public met at Shaw’s on River Street for the first large-scale knotweed removal party in years! The hard working group removed approximately 35 bags of the nasty invasive plant from the banks of the Charles River. Many thanks to our leader, Ann McE for organizing…

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Get to Know the Waltham Land Trust

June 28, 2025

Sonja Wadman Featured in League of Women Voters’ Know Your City Series On May 7, Waltham Land Trust Executive Director Sonja Wadman was the featured guest in the League of Women Voters’ Know Your City series. In this engaging conversation, Sonja dives into the heart of the Land Trust’s mission, ongoing projects, and its growing…

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Guided Evening Bird Walk, June 17, 2025

June 17, 2025

It was a misty evening, but 20 bird lovers met at the Sear’s Land in Weston to walk on a trail in the woods towards a large pond that is a heron rookery! Then we went on the Mass Central Rail Trail to get a different angle of the nests and set up a scope…

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21st Annual Green Space Blues Jam, May 16, 2025

June 5, 2025

110 happy gala attendees soaked up the beautiful and historic atmosphere of Stonehurst, the Robert Treat Paine Estate, during the 21st Annual Green Space Blues Jam. The WLT’s biggest fundraiser of the year featured music by Paul Rishell and Annie Raines, snacks from CRISP Catering, cake from Montillo’s, drinks from Boston Beer Company, Stormalong Cider,…

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Yoga Fundraiser Shiva Shakti, April 29 2025

June 5, 2025

Sixteen yoga enthusiasts attended an indoor gentle, restorative session with instructor Gwen in the studio upstairs from the WLT office on Common Street, Shiva Shakti. It was wonderful! Gwen read quotes from Transcendentalist writers while invoking images of nature when urging participants to hold stretches and poses. So cool! See all the pictures on our…

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26th Annual Charles River Earth Day Cleanup, April 26, 2025

May 31, 2025

On a very windy Tuesday, WLT ED Sonja Wadman joined DCR Commissioner Arrigo and the leadership of other organizations running the 26th Annual Charles River Earth Day Cleanup for a photo near the Hatchshell on the Esplanade. Then on a rainy Saturday, close to 120 people braved the weather to remove litter and invasive plant…

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Mindfulness Workshop & Walk, April 17, 2025

May 10, 2025

WLT joined forces with Agape Spiritual Community, Waltham Council on Aging, Friends of the Waltham Public Library, and Stonehurst to provide a mindfulness and stress-reduction workshop for about 44 participants. Matt Carriker from Agape led the session, first inside in the gorgeous and historic Paine Estate, then on trails as we quietly walked around the…

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Annual Stewards’ Training, April 12, 2025

April 26, 2025

On a rainy Saturday, we held our annual free training for volunteers interested in becoming WLT trail and land stewards, restoring ecosystems throughout the Watch City. Hosted by Ranger Adam Green at the Prospect Hill Park Lodge, we began with a season kickoff lunch with current and future stewards, then went over presentations that covered…

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Duck Walk along the Charles, March 1, 2025

April 11, 2025

After having to postpone twice due to the weather and icy trail conditions, we finally had our annual walk along the river in search of visiting waterfowl. We saw Bufflehead, Goldeneye, Ring-neck, and Mallard ducks, plus a Lesser Scaup, Mocking birds, Red-winged blackbirds, Canada geese, a Downy woodpecker, Ring Bill gulls, and a male Cardinal.…

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Upcoming Events

Western Greenway 5K Run/Walk 2024

Oct 27, 2024 12:00PM—2:00PM

The McLaughlin Building Metropolitan Pkwy N North Waltham, MA 02452

Not Your Average Joe’s Fundraiser

Aug 27, 2024 11:30AM—9:00PM

Not Your Average Joe’s 56 Marketplace Drive Waltham, MA 02451

Not Your Average Joe’s Fundraiser

Aug 20, 2024 11:30AM—9:00PM

Not Your Average Joe’s 56 Marketplace Drive Waltham, MA 02451

Not Your Average Joe’s Fundraisers

Aug 13, 2024 11:30AM—9:00PM

Not Your Average Joe’s 56 Marketplace Drive Waltham, MA 02451

Not Your Average Joe’s Fundraiser

Aug 06, 2024 11:30AM—9:00PM

Not Your Average Joe’s 56 Marketplace Drive Waltham, MA 02451

Waltham Wildlife

We aren't the only ones that benefit from preserving open space in Waltham. Here are some pictures of Waltham wildlife that you could find living on or passing through the open spaces in Waltham. Some of the pictures were taken at night with a camera that was triggered by a sensor.

Beaver Brook North Pond

A short video of Beaver Brook North pond showing the changes over a year!

Online Specials To Support WLT!

Buy Wachusett Mountain lift tickets online

Any lift ticket purchased online (at a discounted price versus in person) with the coupon code DON-WLT earns the Waltham Land Trust $10 a ticket at the end of the season.

Buy Chateau gift cards online

Any gift cards purchased online with the coupon code WLT will earn the Waltham Land Trust 5% of that sale. Get yours today!

Our Mission

Founded in 1999, the Waltham Land Trust’s mission is to create a legacy of land conservation in Waltham by promoting, protecting, restoring, and acquiring open space.

The Land Trust envisions growth in public appreciation of natural resources, preservation and restoration of native habitat, and increased biodiversity to foster a healthier environment.