Celebrate Halloween by taking to the trails in your costume (if it's safe to do so) and help raise money for the Waltham Land Trust in a super fun, family-friendly way!

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 2025 Western Greenway 5k will be on Sunday, October 26, 2025 at 12:00pm (noon). Details about it are below and last year's photos are HERE.

Advanced bib pickup will be on October 25th. Stay tuned for more details. Free T-shirts for the first 100 runners to register!

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 Thursday before the race (10/23/25). Additional registrations are always welcome, but there is an additional $5 fee to register after 10/23/25 or at bib pickup/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 Waltham Land Trust member discount, your membership must be up to date and you must log in to your account when you go to register for the event. If you forgot your login name or your password, go to iforgot.walthamlandtrust.org.

We've started collecting gift cards for prizes and will update as. We’ll have extras, so everyone who registers will have a chance to win something!

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 arichardson@walthamlandtrust.org

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