Highway 103 is an east-west highway in Nova Scotia that runs from Halifax to Yarmouth. The highway follows a route of 294 km (183 mi) along the province's South Shore region fronting the Atlantic coast. The route parallels its predecessor, local Trunk 3. The highway varies from 2-lane controlled access to 2-lane local secondary roads on the section between Yarmouth and Hebbville. East of Hebbville to Upper Tantallon, the highway is 2-lane controlled access, with the exception of a short 4-lane divided freeway near Chester. From Upper Tantallon (Exit 5), to the interchange with Highway 102 (near Bayers Lake) in Halifax, the highway is 4-lane divided freeway.