The NH 1 enters Haryana at the district of Ambala, from Punjab's Patiala district. Thereon, it passes southward through the districts of Kurukshetra, Karnal, Panipat and Sonipat. The city of Sonipat does not fall along the GT Road, while the city of Kurukshetra is marginally off it. In Ambala, it passes through one of Northern Railways' major railway junctions—the Ambala Cantonment, close to the Ambala City.

After Sonipat, the highway enters its last leg, into the national capital Delhi. The minor stretch of NH 1 in Sonipat district, leading up to the Delhi border, has been witnessing massive real-estate development along it.

પ્રસ્તાવના
NH 1 in Delhi
National Highways Development Project
NH 1 in Haryana