Hawaii Route 31
| Pi'ilani Highway | ||||
Route 31 highlighted in red | ||||
| Route information | ||||
| Maintained by HDOT | ||||
| Kihei segment | ||||
| Length | 7.2 mi (11.6 km) | |||
| North end | Route 310 / Route 311 in Kihei | |||
| South end | Wailea Ike Drive in Wailea | |||
| Kaupo segment | ||||
| Length | 22.4 mi (36.0 km) | |||
| West end | Route 37 near Kula | |||
| East end | Route 360 in Haleakala Nat'l Park | |||
| Location | ||||
| Country | United States | |||
| State | Hawaii | |||
| Counties | Maui | |||
| Highway system | ||||
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Hawaii Route 31, also known as the Pi'ilani Highway, is a 38-mile road on the island of Maui in Maui County, Hawaii, United States.