Avon is a well-to-do suburb of Hartford, near Talcott Mountain and along several miles of the Farmington River.
At the height of Connecticut's freeway expansion plans, Avon was slated to have two freeways — US 44 and CT 10 — with a stack interchange connecting them. Both plans were cancelled in the 1970s.
Avon is the site of Connecticut's only runaway truck ramp, on US 44 descending toward the CT 10 intersection.
CT 4 comes close to cutting a corner of Avon near Unionville, but does not enter the town.