The Western Greenway 5K

Since 2013, the Waltham Land Trust has held the Western Greenway 5K walk and run benefit event where people of all ages traverse a 5K distance through the Western Greenway.

The 5K (3.1 mile) course goes through and around a variety of habitats in Beaver Brook North Reservation and Rock Meadow, including cattail marshes, forests, vernal pools, and open meadows. This year's race route is the same as last year.


The 2023 Western Greenway 5k is Sunday, October 29, 2023 at 1:00pm.

Advanced bib pickup will be at Mighty Squirrel Brewing Co. from noon to 2:00pm on Saturday, October 28th.

You can also pickup your bib on raceday at the registration tent near the McLaughlin Building on Metropolitan Parkway North. Please arrive early if you intend to pick up your bib the day of the race.

Online registration will close at midnight on the Friday before the race (10/27/23). Additional registrations are always welcome, but there is an additional $5 fee to register at bib pickup, or the morning of the race. Because WLT relies on the proceeds from the race to fund its work and we expend certain costs, race registrations are not refundable.

To get your Land Trust member discount, your membership must be up to date and you must login to your account when you go to register for the event. If you forgot your login name or your password, go to

Every year we need volunteers to help with tasks like checking the race route and handing out water and snacks. Interested in volunteering? Email Anna Richardson at

Thank you for being part of the Western Greenway 5k and supporting the Waltham Land Trust!

A huge THANK YOU to this year’s lead sponsor and host of bib pickup and the post-race festivities, Mighty Squirrel Brewing Co.!

The Waltham Land Trust appreciates the generous support of our 2023 WG5K Sponsors:  

Hobbs Brook Real Estate
Mighty Squirrel Brewing Co.
Reynders, McVeigh Capital Management
National Grid
Nelson Companies
Diana Young
Karen Sebastian LLC
Debbie and Moritz von Rechenberg
Automec Inc
Paul Brasco for City Council at Large
Carpenters Local Union 339
George Darcy for City Council at Large
Elinor & Jack Marcou Charitable Foundation
Failla & DeFrancesco Family Dentistry
Foster & Cannon Attorneys, P.C.
Douglass Johnston and Sarah May
Merrimack Valley Credit Union
Nadene B Stein and Ty Sandefur
Watertown Savings Bank
John Dieckmann
Bentley  University
Watch City Research
Anna and Clarence  Richardson
Carol and David Greenfield

Check out the course map!

Click on the map to download a PDF.

McLaughlin Building

Check out pictures from previous Western Greenway 5Ks!