Hanauma Bay Ridge Trail | The View Above the Bay

The Hanauma Bay Ridge Trail climbs the ridge above Hanauma Bay on Oahu’s southeastern coast, with sweeping views of the bay, Koko Crater, and the Ka Iwi Channel. It’s about 1.5 miles round trip if you stick to the paved ridge path, or closer to 3 miles and 2 to 2.5 hours if you add the caldera loop below. Either way, steep enough that paved doesn’t mean easy, and fully exposed to wind and sun. Most people at Hanauma Bay are below you, queuing to snorkel. Up here it’s quiet, the light in the late afternoon is warm, and in winter you can watch humpback whales moving through the channel below. Sunset is the best time to be on this trail.

About the Hike

We told our daughter it was a quick two-mile hike. I should have actually looked it up first.

It had been about 20 years since I last did this trail — a hazy memory of crumbling basalt and steep drop-offs and great views that apparently weren’t enough to bring me back sooner. This time we brought Bear the dog and set out in the late afternoon, chasing the sunset.

The trailhead was the first challenge. We parked in the neighborhood off Nawiliwili Street, walked down to Kalanianaole Highway, picked up the path to the water tower, and followed the dirt trail until it connected with the paved ridge path. There were no signs, just other people’s footprints in the dirt that kept us going in what felt like roughly the right direction. Eventually the trail appeared.

Then we started uphill and didn’t really stop. Paved turns out not to mean easy. The ridge is fully exposed — no shade, strong wind, intense sun if you’re there in the middle of the day. We ran into a group of six-year-olds with binoculars whale watching from the ridge, which was both adorable and mildly humbling. Without binoculars we had to squint. We decided we needed to get closer to the water.

That meant dipping down into the caldera on the dirt trail loop below the ridge. This is where Bear started limping – kiawe thorn in his paw. We were ready to carry him home but as soon as we took it out he was immediately ready to carry on, which is the correct attitude. The descent into the caldera is loose: flaky basalt mixed with gravel and dirt. Go slow.

At the bottom the trail dips toward the water where you can peer into Hanauma Bay from above and look across the Ka Iwi Channel toward Molokai. There were whales. We also found tire tracks on the basalt, which remains unexplained. Who is driving out here and why.

Then back up along the layered basalt to rejoin the paved ridge path, where other hikers had gathered for sunset. The light on this corner of the coast at that hour is worth the climb. It disappeared quickly. We navigated back on the paved road with iPhone lights. Our daughter will not believe us next time we describe something as a quick hike.

Getting There

The official access is from the Hanauma Bay Nature Preserve parking lot on Kalanianaole Highway. Parking is $3 ($1 kamaaina). The preserve is closed Mondays and Tuesdays, which means the parking lot is also closed. Plan accordingly.

The local alternative, and the one worth knowing about: park on the street in the neighborhood off Nawiliwili Street, walk down to Kalanianaole Highway, and pick up the dirt path near the water tower. Follow it until it connects with the paved ridge trail. It’s not signed and it’s a bit of a meander at first, but other hikers’ footprints will keep you on track. This gets you around the parking fee and the preserve’s limited hours.

Dogs are allowed on leash. Watch for kiawe thorns in the grass, especially if you venture off the paved path into the caldera. They puncture paws and shoes alike.

What to Bring

The non-negotiables. Water and reef-safe sunscreen, more of both than you think you need. There is no shade on this trail from bottom to top. The wind makes it easy to underestimate the sun.

On timing. Avoid midday in summer. The heat and sun on an exposed ridge with no shade is punishing. Late afternoon into sunset is ideal. The light on this corner of the coast is warm and the crowds below at the bay have thinned out. Bring a light layer for the descent; the wind gets cold once the sun drops.

On footwear. Sturdy shoes for the paved trail, essential if you’re doing the caldera loop. The descent is loose basalt and gravel. Keep dogs on the paved path or check paws carefully after the caldera detour.

For little kids. Binoculars if you have them. Whale watching from the ridge is excellent in winter and kids who can actually see the whales are more enthusiastic about the climb. Snacks. This hike is harder than it sounds and a snack break at the top goes a long way.

Explore More of the Southeastern Coast

The Hanauma Bay Ridge Trail sits at the western edge of the Ka Iwi coast, one of the most dramatic stretches of shoreline on Oahu. Just up the road, Halona Beach Cove is worth a stop — a small hidden beach below the blowhole lookout that stops people in their tracks. Further along, the Ka Iwi Shoreline Trail follows the wild coastline through native coastal scrub with tidepools and whale watching. And at the northern end of the coast, the Makapuu Lighthouse Trail is one of the best family hikes on the island.

3 Places to Eat After the Hike

Moena Café, Hawaii Kai. A local brunch spot with good loco moco, solid pancakes, and coffee worth stopping for. Mostly residents, not tourists. Gets busy on weekends so go early.

Kona Brewing Company, Hawaii Kai. Pizza, burgers, beer brewed in-house, and a lanai with water views. Can get loud but it’s a reliable option after a morning out.

Nico’s at Koko Marina, Hawaii Kai. Fresh poke bowls and grilled fish plates by the water at Koko Marina Center. Casual, reasonably priced, good furikake ahi.

Family Photos Near Hanauma Bay

Makapuu Beach Park just up the coast is one of my favorite spots for sessions on this side of the island. The light on the cliffs in the late afternoon is dramatic, the views are beautiful, and the whole area has an energy that’s different from anywhere else on Oahu. If you want to see what a morning there looks like, you can find sessions here, here, and here. And if it looks like something your family would be into, here’s where to start.

Hanauma Ridge Trail FAQs

Q: Where does the Hanauma Bay Ridge Trail start?

A: The main access is from the Hanauma Bay Nature Preserve parking lot on Kalanianaole Highway ($3 parking, $1 kamaaina). The preserve is closed Mondays and Tuesdays. A local alternative is to park on the street off Nawiliwili Street and follow the dirt path near the water tower up to the paved ridge trail.

Q: How hard is the Hanauma Bay Ridge Trail?

A: Harder than it looks. The paved ridge trail is about 1.5 miles round trip and steep. Add the caldera loop on dirt trail below the ridge and the full hike is closer to 3 miles, typically 2 to 2.5 hours. The caldera descent is loose basalt and gravel. Go slow and wear sturdy shoes.

Q: When is the best time to hike the Hanauma Bay Ridge Trail?

A: Late afternoon into sunset. The light on this corner of the coast is warm and the heat has usually eased off. Avoid midday in summer. The exposed ridge with no shade is punishing. From December through April, whale watching from the ridge is excellent. Bring binoculars.

Q: Are dogs allowed on the Hanauma Bay Ridge Trail?

A: Yes, on leash. Watch for kiawe thorns in the grass especially if you venture off the paved path. They puncture paws and shoes, so check carefully after any off-trail exploring.

Q: Can kids do the Hanauma Bay Ridge Trail?

A: Yes, with realistic expectations. It’s steep and there’s no shade, so younger kids will need water, snacks, and a break at the top. The payoff: views of Hanauma Bay, Koko Crater, and whale watching in winter, is worth it. Just don’t describe it as a quick hike.