The A1 highway is a major road in Nigeria, connecting Lagos in the south to the border with Niger in the north at Birnin Konni.

[1] The A1 highway, also known as Route 1, spans a significant distance across Nigeria, passing through major cities including Lagos, Ibadan, Minna, and Birnin Konni at the border with Niger.

[2] The A1 highway facilitates trade, travel, and connectivity between Algeria's capital, Algiers, and the Republic of Niger.

At various points along its route, the Expressway 1 (E1) was constructed to enhance transportation infrastructure.

From Lagos to the border it crosses through Ibadan, Ilorin, and Sokoto.