Here's a peak at a portion of the Housatonic Rail Trail in Trumbull.
We parked at Old Mine Park (Old Mine Road) in Trumbull and headed south into the historic Parlor Rock section (there was once an amusement park along the rail line like Lake Quassy or Pine Rock Park). All Trumbull parks were at one point open only to residents year round, but I searched for signs saying that and didn't find any at Old Mine Park. I suspect they had to end that xenophobic practice (what is WRONG with Trumbull???) after taking grant money to build the path, at least for the parks the path traveled through.
The trail was very nice, the Pequonnock River running alongside the trail was scenic, and the Walky-Dog attachment for my bike worked terrific.