Trunk 2 begins at intersection of Connaught Avenue and Bayers Road on the Halifax Peninsula in the Halifax Regional Municipality, and travels north along Connaught Avenue and Windsor Street to Lady Hammond Road.

It continues along the eastern shore of Shubenacadie Grand Lake and passes through Wellington Station, Wellington, Grand Lake Station and Oakfield before turning slightly northeast to enter the Shubenacadie Valley.

[1] It enters Hants County at Enfield where it crosses to the west bank of the Shubenacadie River.

Trunk 2/4 follows Highway 102 for 1 kilometre to the north, crossing the Salmon River between exits 14 and 14A to Onslow and then continues as a local road heading west from Onslow along the north shore of Cobequid Bay through Masstown and Glenholme, where Trunk 2 and 4 separate.

Trunk 2 turns northwest from Springhill and runs a further 30 km to the town of Amherst which it passes through until it reaches the rural community of Fort Lawrence on the interprovincial boundary with New Brunswick.