Hikes›United States›Massachusetts›Sudbury Reservoir Watershed›Bay Circuit TrailBay Circuit TrailDay hike · 8.0 km · ↑ 12 mIn Sudbury Reservoir Watershed, MassachusettsMore about Bay Circuit Trail (2)Breakheart Outdoors: Bay Circuit Trail Hike End-To-End Statsbreakhearttrailrunning.blogspot.com · Jun 2016 · trip reportBreakheart Outdoors: Bay Circuit Trail Hike Reportbreakhearttrailrunning.blogspot.com · Feb 2016 · trip report