Hawaii Route 200, also known as Saddle Road or the Daniel K. Inouye Highway, spans the width of the Big Island of Hawaii for 52.7 miles from downtown Hilo to the junction with Hawaii Route 190 near Waimea. Hailed as being notoriously dangerous, Saddle Road is named after the “saddle” between the Mauna Loa and Mauna Kea volcanoes, reaches a maximum elevation of over 6,600 feet, and provides access to the volcano observatories that branch off the road. Most of the trail has now been repaved, and significant parts have new re-alignments to modern standards.

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