Route 79 is a 14.34-mile (23.08 km) state highway in southern Connecticut from Madison to Durham.

Route 79 begins at US 1 in Madison center and heads north across I-95 (at Exit 61).

It continues north, intersecting with Horse Pond Road (an unsigned state road designated as Special Service Road 450), which leads to the town offices, and eventually, Hammonasset Beach State Park.

The road continues north into the town of Killingworth, intersecting Route 148 just south of the town line with Durham.

The road runs north for another 2.3 miles (3.7 km) within Durham before ending at Route 17 south of the town center.