Pi'ilani Highway
Piʻilani Highway, also called the “back road to Hāna,” is a rugged and scenic coastal drive tracing the southern slopes of Haleakalā. Connecting the communities of Kula and Kīpahulu, this partially unpaved road winds through lava fields, sea cliffs, and windswept ranchlands. While less traveled than the Hāna Highway, it offers adventurous travelers breathtaking views and a glimpse into Maui’s remote beauty.
Pi'ilani Highway (Hwy 31), Maui
Also known as the back road to Hana, the Pi'ilani Highway (Hwy 31) leads along Mt. Haleakala's southern flank, from upcountry Kula and Ulupalakua to the small communities of Kipahulu and Hana on Maui's east shore. The highway has a bad reputation and some rental car companies either caution against driving this road or prohibit it.
The "highway" is not really a highway like you would imagine it, with at least one lane in either direction, but more like a remote country road. In some areas (such as at Lelekea Bay) it's just a one-and-a-half lane bumpy road hugging the sea cliff around a blind curve. Fences have been installed on the mountain here to prevent rocks from falling onto cars.
Luckily the traffic on Pi'ilani Highway is much lighter than on the Hana Highway between Kahului and Hana, the road most people take to get to Hana. Compared to the lush and green rainforest vegetation and many waterfalls along the Hana Highway, the vegetation along the Pi'ilani Highway is drier with red-brown meadows, pebble beaches and sea cliffs.
Key Features of Piʻilani Highway
- Southern flank route: Traverses the back side of Haleakalā, connecting Ulupalakua to Kīpahulu.
- Challenging terrain: Narrow, partially unpaved road with steep drop-offs and blind curves—caution is advised.
- Remote and uncrowded: Less traffic than the Hāna Highway, offering a peaceful, off-the-beaten-path drive.
- Dramatic scenery: Includes rugged lava rock coastline, windswept cliffs, red-earth meadows, and distant ocean views.
- Distance: Approximately 37 miles (60 km) between Ulupalakua and Hāna.
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Frequently Asked Questions
Is the Piʻilani Highway safe to drive?
It’s safe for cautious drivers during dry weather. However, it's narrow, remote, and not recommended during or after heavy rain due to potential washouts.
Is the Piʻilani Highway paved?
Parts of it are paved, but several segments are gravel or patchy asphalt, especially near the southern coastline.
Is there cell service along the highway?
Cell service is spotty or nonexistent along long stretches. Plan accordingly and bring a physical map or GPS with offline support.
Do I need a 4WD vehicle?
No, a regular car can typically handle the drive in dry conditions, but high clearance and careful driving are recommended.