This post contains affiliate links. If you book a rental through one, I may earn a commission at no extra cost to you.
Short answer: You can’t drive around Kauai: the road is a U-shape with no road along the Na Pali Coast. End to end it is about 78 miles, roughly 2.5 to 3 hours non-stop.
Status, October 15, 2026: Hawaii State Parks says Ha‘ena State Park reopens October 15, 2026, and gohaena.com says the shuttle resumes the same day. Overnight camping and hiking past the two-mile point of the Kalalau Trail stay closed. The other Kauai state parks, apart from part of Wailua River, remain closed after Hurricane Lowell, including Polihale and Waimea Canyon, and Kōke‘e Road is closed until further notice. HDOT’s road page, last updated October 9, still lists local access only on Kuhio Highway from Hanalei to Ke‘e Beach. Check the Hawaii State Parks notices and HDOT road updates before you plan the day.
How long does it take to drive around Kauai? Here’s the honest answer: you can’t. Kauai isn’t a loop drive at all. It’s a U-shape, and the gap in the middle isn’t a rental restriction or a bad road. There’s no road there, period.
The straight answer
The drivable route runs from Ha’ena on the North Shore, down the east side through Lihue, and around to Polihale on the west side, about 78 miles end to end. Driven non-stop, that’s roughly 2.5 to 3 hours. It’s a semicircle, not a circle.
Why there’s no loop: the Na Pali Coast
Between Ha’ena and Polihale sits the Na Pali Coast: roughly 15 miles of sheer, thousand-foot sea cliffs with no road of any kind. The only way through on foot is the Kalalau Trail, a permit-only backcountry hike, not something you do in an afternoon or in a rental car. This isn’t a case of “check your agreement first” the way Kahekili Highway or Piilani Highway are on Maui. There’s genuinely nothing to drive, no shortcut, no unpaved workaround. If you’re planning a Kauai trip around “driving the whole island,” that trip doesn’t exist; plan two separate ends instead.
How to actually plan your rental days around this
- North Shore day: Ha’ena and the Na Pali Coast viewpoints. See the Haena State Park reservations guide: this end requires a booked entry, not a walk-up.
- South/West Shore day: Poipu, Waimea Canyon, and Polihale, treated as its own separate trip from the North Shore side. Polihale is reached by a five-mile unimproved dirt road that floods, and Hawaii State Parks warns that rental companies may prohibit it, so check your agreement first.
- Don’t book a rental expecting to circle the island in one day: the road doesn’t support it no matter how much time you have.
Not sure you need a rental at all? See whether you actually need a rental car on Kauai: Kauai leans harder toward “yes” than Maui or Oahu.
Picking up at the airport first? The Lihue Airport rental car guide covers what happens between landing and getting on the road.
Check current conditions and closures on Hawaii DOT’s Kauai lane closures page before heading out.
Stopping in Hanalei on the way? See Black Pot Beach parking for where the free lots are and when they fill.
North Shore snorkel stop? Read Tunnels Beach parking before you drive out.
Planning the west side? Check whether Waimea Canyon Drive is open after the hurricane closures, and see Poipu Beach parking on the south shore.
Compare rental rates for your trip →
Photo: Stuck In Space on Pexels.
Researched and written by Neo Pecorro. Facts on this page were checked against Hawaii DOT, plus the other sources linked above. Hawaii rules change often, so confirm on the official page before you go.
Last updated: September 11, 2026.