New Zealand State Highway 4

State Highway 4 is the shortest of New Zealand's eight national highways. It runs north-south across rugged hill country, forming a short cut between two points on State Highway 3 thereby avoiding Taranaki and the coasts of the North and South Taranaki Bights. Distances are measured from north to south.

For most of its length SH4 is a two-lane single carriageway, with at-grade intersections and property accesses, both in rural and urban areas.

Route

The highway commences from a junction on SH 3 11 km south of Te Kuiti. It heads south-southeast, climbing initially, then descending along the winding valleys of the Ohura and Ongarue Rivers, two tributaries of the Whanganui. The Ongarue joins the Whanganui close to Taumarunui, and here the highway turns east briefly, ascending the Whanganui's valley before turning south to skirt the North Island Volcanic Plateau. The peaks of the plateau's volcanoes are clearly visible from the highway, especially that of the southernmost, Ruapehu.

At Horopito the highway veers southwest briefly, following a tributary of the Maungawhero River until it joins with this river near Raetihi. The highway continues to descend the Maungawhero's valley to within 40 km of its mouth, then heads west across rolling hill country to the valley of the Whanganui River, which it follows for the last 15 km of its journey into Wanganui.

Major junctions

Territorial authority	Location	km	Destinations	Notes
Waitomo District	Eight Mile Junction	0	SH 3 north – Hamilton SH 3 south – New Plymouth	SH 4 begins
Ruapehu District	Taumarunui	70	SH 43 (Kururau Road) – Stratford
		74	Whanganui River
	Manunui	77	SH 41 – Turangi
	National Park	114	SH 47 – Turangi
	Tohunga Junction	140	SH 49 – Ohakune, Waiouru
Wanganui District	Putiki	237	SH 3 north – Wanganui, New Plymouth SH 3 south – Palmerston North	SH 4 ends

See also

• List of New Zealand State Highways
• List of roads and highways, for notable or famous roads worldwide