Due to its narrow and twisty nature, trucks are not permitted to tow heavy trailers on the unsealed section of the route.

[citation needed] Starting at the intersection with SH 5, one drives through the Kaingaroa Forest and after 38 km the small town of Murupara is passed; at this point, the road temporarily loses its state highway status.

At km 134, at Aniwaniwa, is a visitor centre operated by the Department of Conservation where several different walks start, including a short stroll to the Āniwaniwa Falls.

From Aniwaniwa the road regains its state highway status and enters the valley of the Waiau River, where the seal restarts.

At km 195, at Wairoa, the road finally terminates on SH 2 at the intersection of Mahia Avenue and Bridge Street.