Saddle Road

Saddle Road, officially Daniel K. Inouye Highway, crosses Hawaii Island between Hilo and west Hawaii, passing high lava plains between Mauna Kea and Mauna Loa.

Saddle Road, Big Island

Buckle up! Slicing across the Big Island from east to west, through a high valley or “saddle” between the mountains of Mauna Kea and Mauna Loa, Saddle Road (also known as Route 200) is 54 miles (87 km) of pure adventure. Along the way, you'll pass dried lava flows, rolling pastureland, desert- and moonlike fields, lush rainforests and trailheads that lead to several hiking trails. Also along the route are roads leading to the mountaintops of Mauna Kea and Mauna Loa, as well as the largest military training reserve in Hawaii and the Bradshaw Army Airfield.

Saddle Road cuts through some of the best scenery on the Big Island. In the past, many car rental companies used to forbid use of their cars on Saddle Road, but now most allow it. For a long time, the road was considered the most dangerous in the state because it had many rough areas and marginally maintained pavement. Today, many sections of the road have been improved, but some rather dangerous spots remain. However, it is no worse than many other roads on the island and it is recommended to drive slowly and with caution. The area is remote and there are no facilities along the way, so if your car breaks down or you run out of gas, you have to walk a long way for help.

Saddle Road got its name from the stretch of road that passes between the Mauna Loa and Mauna Kea volcanoes. This “saddle” area is marked by small crosses to commemorate the people who have died while traversing the road and perhaps to remind drivers to take extra caution. Heavy mist is common in this area, so before setting out, make sure there's enough visibility. Also, there are many long, flat stretches and it's easy to become “road hypnotized” or get “lead foot,” so be careful.

The highest point on the road is at 6,632 feet (2,021 m). People have described this area as resembling a moonlike landscape, with long stretches of bare lava and very little vegetation.

Key Features

Cross-island highway between Hilo and west Hawaii
Officially named Daniel K. Inouye Highway
Also known by the older name Saddle Road
Passes between Mauna Kea and Mauna Loa
High-elevation drive with broad lava plains and open volcanic scenery
Weather can change quickly with fog, rain, wind, sun and cooler temperatures
Services are limited along the interior stretch
Main access road for the Mauna Kea access road junction
Military traffic may appear near Pohakuloa Training Area
Important driving link for Hilo, Waimea, Kailua-Kona and Kohala Coast travel

Frequently Asked Questions

Why is it called Saddle Road?

The name comes from the high saddle-shaped land between Mauna Kea and Mauna Loa. The road crosses that broad interior plateau rather than following the coast.

What is the official name of Saddle Road?

The highway's official name is Daniel K. Inouye Highway. Many residents and visitors still use the older Saddle Road name because it describes the road's setting between the island's two massive volcanoes.

Why does the landscape look so different from the coast?

The highway crosses high lava plains, dry shrubland and open volcanic terrain. Rainfall, elevation and younger lava flows create a much different look from Hilo's wet forests or Kona's coastal resorts.

What is Pohakuloa?

Pohakuloa is the high interior area along Saddle Road that includes a large military training area. Drivers may see military vehicles, gates and warning signs near that section.

Why is the Mauna Kea turnoff important?

The Mauna Kea access road leaves Saddle Road and climbs toward the visitor area and summit region. Conditions change quickly with elevation, and the upper road has its own rules and vehicle requirements.