Maine State Route 103

State Route 103 marker
State Route 103
Map
Route information
Maintained by MaineDOT
Length16.33 mi[1] (26.28 km)
Existed1929–present
Major junctions
West end SR 236 near Eliot
Major intersections US 1 in Kittery
East end US 1A at York Harbor
Location
CountryUnited States
StateMaine
CountiesYork
Highway system
SR 102A SR 104

State Route 103 (SR 103) is a 16.3-mile (26.2 km) long state highway in extreme southern Maine. The route is signed east–west, but forms a half-loop, with most of its western segment running strongly southeast slightly inland of the Piscataqua River and the state border with New Hampshire, its central skirting the Piscataqua generally easterly, and its eastern strongly northeast slightly inland from the Atlantic Ocean. The route piggybacks on different roads with many turns throughout its length.