Kohala Mountain Road, designated Route 250, travels upon the Kohala mountain

Kohala (mountain)

Kohala is the oldest of five volcanoes that make up the island of Hawaii. Kohala is an estimated one million years old—so old that it experienced, and recorded, a reversal of magnetic field 780,000 years ago. It is believed to have breached sea level more than 500,000 years ago and to...

 on the island of Hawaii

Hawaii (island)

The Island of Hawaii, also called the Big Island or Hawaii Island , is a volcanic island in the North Pacific Ocean...

 in the state of Hawaii

Hawaii

Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

Kohala Mountain road begins about 1.8 mi west of Waimea, at 20°1′36"N 155°41′57"W, near the Hawaii Preparatory Academy

Hawaii Preparatory Academy

Hawaii Preparatory Academy is a coeducational, boarding, independent school in Kamuela, Hawaii teaching kindergarten through the twelfth grade. Founded in 1949 by The Right Reverend Harry S. Kennedy, Episcopal Bishop of Honolulu, the school came of age under the leadership of James Monroe Taylor...

 campus. Route 19 at this point is known variously as Hawaii Belt Road, Mamalahoa Highway, or Kawaihae Road.
The northern terminus (where Route 250 is known as Hāwī Road), is in the town of Hāwī at 20°14′16"N 155°49′49"W, at the intersection of Akoni Pule Highway

Akoni Pule Highway

The Akoni Pule Highway, Hawaii State Highway Route 270, is the main road along the North Kohala Coast on the Island of Hawaii from Kawaihae to Upolu Point and then on to Pololū Valley Lookout.* Total miles = 27.0 -History:...

(Route 270).