Route 2 is a 58.03-mile (93.39 km) state highway in Hartford and New London counties in Connecticut.

It is a primary state route, with a freeway section connecting Hartford to Norwich and following surface roads to Stonington.

[1] Route 2 begins as a continuation of State Street (just east of Columbus Boulevard) near Interstate 91 in downtown Hartford.

At the East Hartford-Glastonbury town line, there is a full trumpet interchange with Route 3.

Just after entering Ledyard, Route 2 becomes a four-lane undivided freeway, passing by the Mashantucket Pequot Reservation and then the Foxwoods Resort Casino.

After passing through Ledyard, Route 2 continues into North Stonington as a two-lane surface road.

It has an interchange with Route 78 (Westerly Bypass) and terminates about 1.5 miles (2.4 km) later at the junction with US 1 in the Pawcatuck section of town just west of the Rhode Island state line.

The state remanded the remaining access highway segments to town jurisdiction.