Mauna Loa in Hawaii: A Road Through Lava

# The Epic Drive Up Mauna Loa

Want to experience something truly otherworldly? Head to Hawai'i and tackle the Mauna Loa Scenic Drive—a wild 17-mile journey up one of the country's highest paved roads. Starting from Saddle Road at 2,001m, you'll climb 1,401 meters of elevation through a genuinely alien landscape of solidified lava to reach Mauna Loa Observatory at 3,402m (11,161ft).

Built back in the 1950s, this narrow asphalt ribbon cuts through volcanic terrain that looks like the moon. "Mauna Loa" means "Long Mountain" in Hawaiian, and you'll understand why as you wind upward with an average 4.98% gradient. The road's rough, patchy surface features a white fog line down the middle—straddle it to avoid your tires on the jagged lava rocks lining the narrow shoulders.

Fair warning: don't attempt this if you have heart or respiratory issues. The road gets serious about hazards with warning signs everywhere, and for good reason. It's basically a single lane with blind hills, tight turns, and zero forgiveness if visibility drops. Fill your gas tank before you go—there's nothing at the observatory.

The rewards, though? On crystal-clear days, the views are absolutely stunning. You'll spot Mauna Kea, Kohala, Haleakala on Maui, and sometimes even other islands in the distance. The drive winds through Hawai'i Volcanoes National Park with plenty of pullouts to stretch your legs and soak it in.

Here's the catch: weather can turn on a dime. Fog, clouds, snow, rain, and whiteouts are all possibilities year-round. If conditions start deteriorating, bail out immediately—this road is genuinely dangerous in poor visibility. Winter can bring blizzards and high winds, temperatures drop below freezing at night always, and remember, this is an active volcano (last erupted in 1984). Most of the road is drivable in any 2WD vehicle, but plan your visit for the clearest day possible and respect this mountain's power.