Events

Charles River Cleanup with 350 Mass Waltham

09/21/2025 02:00 PM - 03:30 PM ET
Stewardship
  • Free
Shaw's parking lot
130 River Street
Waltham, MA
Park/meet at Shaw’s, 130 River Street, back right corner

Hardy Pond Walk and New WLT Land Celebration

09/27/2025 01:30 PM - 03:30 PM ET
Meet and Greet
  • Free
Lakeview Preserve
153 Lakeview Ave
Waltham, MA 02451
Meet at Lazazzero Playground Boat Ramp, 7 Shore Road for walk, or at 153 Lakeview Ave for the party

Pre-Sunset Yoga Outdoors at Met State

09/30/2025 05:15 PM - 06:30 PM ET
Fundraiser
  • $25.00
City of Waltham Dog Ranch
Metropolitan Parkway North
Waltham, MA 02452
Park/meet by Waltham’s Dog Ranch, Metropolitan Parkway, log in to get your discounted price.

Western Greenway 5K Run/Walk 2025

10/26/2025 12:00 PM - 02:00 PM ET
Fundraiser
  • $30.00  -  Adults - Non Members/General Public
  • $15.00  -  Child (12 and under, running the 5K)
  • Free  -  Child 10 and under (Monster Dash Only, 11:30am start)
  • $40.00  -  Living Lightly 1-year Membership + 5k registration
  • $50.00  -  Individual 1-year membership + 5k registration
  • $75.00  -  Household 1-year membership + 5k registration
  • Free  -  Guest of Race Sponsor
Metropolitan State Hospital
475 Trapelo Road
Waltham, MA 02452
Register for the Western Greenway 5K Run/Walk 2025
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