408 Route 112, Port Jefferson Station, NY
The first Sunday of every month I host a very popular walk from Port Jeff to Setauket along a newly constructed, car free bike/jogging path. There are usually anywhere from 10-40 people of all ages who attend from the various meetup groups I organize.
The entire path is paved and 3.5 miles in one direction. Once we get to the end we turn around for another 3.5 miles for a grand total of 7 miles. The usual pace is that we finish the entire 7 miles in just under 2 hours.
There are some hilly sections so please view the following picture for additional information. The red line below is for the entire walk and if you notice the first half of the red line and the second half are the same, only reversed.
There is a large parking lot next to 7/11 at the traffic light and the entrance to the trail is at the back end of the parking lot. Some people head for drinks and some people head for pizza afterwards.