South Shore Ramble is a 3.4 mile loop trail located near Hingham, MA that features a lake and is good for all skill levels. The trail is primarily used for road biking and is accessible year-round.
The section near the lake is incredibly tight, bumpy, and unstable. I admittedly did not continue along the loop, which appears to connect to a road, but this loop would be a horrible idea for anyone looking for a relatively stable and straight path to bike on. You'll be walking around the lake.