Rail Trails, etc.
Rail Trails or greenways, are also affectionately known as "gravel grinders". Originally railroad corridors, they are generally fairly smooth and off-road. Without much motor vehicle traffic, they're a safe and scenic way for families with children to get out and ride together.
The green lines on the map often represent old railroad beds now revamped as rail trails. There's easy access to a few scattered locations in Fairfield County as well as other choices right across the border in New York State.