The Lanikai Pillbox hike (officially the Kaiwa Ridge Trail) is one of the most rewarding short hikes on Oahu. It’s a steep but manageable ridge trail above Lanikai Beach with panoramic views of the Mokulua Islands, Kailua Bay, and the Koolau mountains. The round trip to the second pillbox is less than a mile and takes most families 30 to 40 minutes. The trailhead is in the Lanikai neighborhood off Kaelepulu Drive, about 45 minutes from Waikiki. Parking has always been limited here, and new restrictions are changing access significantly starting in 2026. Read the parking section before you go.
What makes the Lanikai Pillbox Hike one of the Best Hikes on Oahu?
The Lanikai Pillbox hike is a bit of a unicorn. Most ridge hikes make you work for the views but this one hands them to you in under a mile. That’s hard to beat.
It’s not the easiest trail. Some sections are steep with loose footing, and the ridge has real drop-offs. But it’s manageable for kids who can stay close and follow instructions, and the scrambling parts tend to be exactly what kids like best. We’ve done this hike with babies in carriers, with toddlers, with a pack of preschoolers, and even at night to catch the moonrise.
Beauty in every direction. Now that’s a good hike.
A Bit of History
Here’s something most hikers don’t know: these aren’t actually pillboxes. In military terms, a pillbox is a defensive structure built to house weapons (machine guns, that kind of thing). The two concrete structures on Ka’iwa Ridge were built in 1943 as observation stations, part of a command center network called Station Podmore. Soldiers up here weren’t shooting at anything. They were watching the water and radioing coordinates to gun batteries positioned elsewhere along the coast. The ridge was the eyes. The guns were somewhere else.
After the war ended, the land was quietly sold off to private individuals over the years, eventually coming under state jurisdiction through an executive order. DLNR now manages the roughly four acres that encompass the trail.
If the WWII history appeals to you, Oahu has more of it than most people realize. The Ehukai Pillbox hike on the North Shore is another good one — shorter, less crowded, different view. The Pu’u Ma’eli’eli trail in Kaneohe (trailhead across from Valley of the Temples) is the one almost nobody knows about, with views of Kaneohe Bay and often just you and the birds. Neither one has the sunrise angle (or the perfectly positioned Mokulua Islands) that makes Lanikai special, but both are worth adding to the list along with my personal favorite at Ka’ena Point.
The Challenges of Hiking with Kids
“I’m dying! I can’t take another step! You have to (dramatic pause) carry me.” Does hiking bring out the drama in your kids? Usually, it’s my youngest, but today she charged ahead powered by her “super hiking pants”. Meanwhile, “the good hiker” dragged and moped as the gusty wind had snatched his new hat and deposited it somewhere on the other side of the mountain. Fortunately, the views were good enough to shake them out of their excessive whining.
For what it’s worth, both kids made it to the top just fine. At the first pillbox they became focused on climbing and exploring the structure and finding the perfect spot for snacks. The rest was easy.
Preparing for your Lanikai Pillbox Hike
What to Bring
Even though it’s a short hike, bring water. Dehydration and heat exhaustion are the most common reasons people end up needing rescue on this trail, and the exposed ridge in summer will surprise you. Sunscreen is essential, along with sunglasses and something to cover your head. Fair warning on hats: the wind on the ridge is real, as my son discovered when his took flight. In winter on overcast days it can actually get chilly up there, so a light layer is worth throwing in the bag.
Snacks are underrated as a hiking motivator at any age. Comfortable shoes with actual grip will make it safer to navigate slippery, uneven terrain (the cause of many twisted ankles). Leave anything valuable at home or keep it on your person. Don’t leave anything in your car at the trailhead or at Kailua Beach Park.
Getting There
The trailhead is in the Lanikai neighborhood at the end of Kaelepulu Drive, about 45 minutes from Waikiki on the windward side of Oahu.
Parking is changing significantly in 2026. Starting July 1, parking on Mokulua Drive is permanently banned, all day, every day. Alapapa Drive follows shortly after with the same permanent ban. The only exceptions on either road are a few three-minute loading zones. The cross streets between the two drives will be converted to one-way with parking allowed on one side, but banned on those streets as well from 10 a.m. to 4 p.m. Enforcement in Lanikai is active, fines are $200 (plus you can get towed), and on holidays the entire neighborhood is a special enforcement district. Read the signs every time and don’t count on parking there.
What to do instead: Kailua Beach Park is your most reliable option. It’s a little over half a mile (a 15 minute walk) from the trailhead and you get some nice views of Kailua Bay along the way. For a sunrise hike, you’ll find parking there without much competition. Beach crowds haven’t arrived yet, and that half mile walk is a gentle warm-up before the climb.
For midday or evening visits, especially in summer or over the holidays, driving in and finding parking is more challenging. A few alternatives worth considering:
TheBus Route 671 runs between Kailua Town and Lanikai daily, roughly every 40 minutes, from about 6 a.m. to 6:50 p.m. The ride takes about 9 minutes from Kailua Road. Fare is $3.25 cash (bring exact change as drivers don’t carry money) or $3.00 with a HOLO card. Note that the first bus won’t get you there for sunrise, so this option works better for a later morning or evening hike.
Bikes are increasingly the best way to approach this area, and Kailua is pretty bike friendly Rent a cruiser from Kailua Beach Adventures (130 Kailua Rd, open daily 8 a.m. to 5 p.m.) or an e-bike from Active Oahu (off Hamakua Drive). Ride the bike path from Kailua Beach Park to the trailhead, hike up, come back down, and coast to Lanikai Beach for a swim. It makes for a perfect morning and then you can bike into Kailua town for brunch.
Rideshares are increasingly viable in Kailua, making drop-off at the trailhead possible but expect a short wait.
The closest bathrooms are at Kailua Beach Park. Dogs are not allowed on the trail.
On crowds and heat: Early morning is the sweet spot with cooler temperatures, better light, easier parking, fewer people on the trail. Summer midday on this exposed ridge can be miserable and potentially dangerous. If you’re visiting between June and September, make it a sunrise outing or an evening hike and plan to be off the ridge before it gets hot.
On the Trail – What to Expect
The trail begins behind a cluster of homes, threading through scraggly haole koa trees on slick, packed clay dirt. This opening section is the trickiest part of the whole hike. It’s steep, and super slippery after rain. (Trail improvement work currently underway will eventually add switchbacks here, making this section considerably more manageable.) Take your time, watch your footing, and know that it’s short. After about 10 to 15 minutes you emerge from the trees and get your first look at the Pacific. From there the terrain opens up to more exposed, rocky ground as you continue to climb the ridge.
Follow the ridge to the first pillbox, which most families reach in 20 to 30 minutes from the trailhead. From there the trail flattens considerably, and the second pillbox is only about 10 minutes further. The views are essentially the same from both. If the first one is crowded, keep going.
The pillboxes are heavily graffitied at this point, which I personally think adds to their charm. Getting up on top is its own small achievement. There’s no graceful method. You’re either hoisting a kid, getting hoisted yourself, or doing an ungracious wiggle that closely resembles a seal coming ashore. Once you’re up, take a minute. You earned it. Have a snack, looking for the outline of neighboring Molokai on the horizon, gawk at the impossibly blue water and start making plans to get into it on the way back down. The inside of the bunker offers shade and a break from the wind if you need it, though it can get a little funky in there; venture in accordingly.
Want to go further? The trail continues over rolling hills toward Waimanalo and eventually loops down into the Lanikai neighborhood near Aalaapapa Street, from there about a mile walk back to the trailhead. It also branches toward the mountains, ending in Enchanted Lake. Both extensions are steep and narrow and better suited to adventurous hikers.
Take care: the trail is exposed along its length. Strong sun, strong wind, and real drop-offs along the ridge. There have been some 40 helicopter rescues here in the past 5 years. Watch kids closely near the edges as the views have a way of pulling attention in exactly the wrong direction.
Make a Morning of It: Explore Kailua
The beach below is the obvious next move. Lanikai Beach is a short walk down through the neighborhood to one of the most photographed stretches of sand in the world. If you want showers, bathrooms, and a little more room to spread out, Kailua Beach (where you may have parked) is just up the coast. Kalama Beach Park, in the middle of the bay, usually has fun waves for playing in. Castles Beach at the north end sometimes has surf. For something wilder and less visited, head south toward Waimanalo which is a long, gorgeous stretch that takes you the scenic way back toward Waikiki.
Kailua town is worth an hour of your time even if all you do is eat and grab shave ice. Over Easy is a cheerful spot for creative breakfast and lunch using local ingredients (closed Monday and Tuesday), worth planning around. Kalapawai Market is the laid-back local option with good breakfast, lunch, and espresso. Chad Lou’s Coffee Roasters is the move for coffee, with locally roasted beans and outdoor seating. For shave ice, head to Island Snow which has two Kailua locations. The beach location is convenient but tends to draw long lines; the town location is the easier stop and you’re closer to shopping. Natural flavors are worth it every time, and adding ice cream is never the wrong call.
If you want to keep the morning going, Ho’omaluhia Botanical Garden is just up the road in Kaneohe and it’s worth a detour. Big mountain views, lush tropical scenery, and easy exploration for all ages. Manoa Chocolate offers free guided tastings with knowledgeable staff, a surprisingly good stop for kids who are into that kind of thing (and adults who definitely are).
Families who are up before dawn to hike a ridge tend to know how to have a good time outdoors which is exactly what makes for a great family photo session. If you’re already planning an early morning in this part of the island, adding a sunrise session on the beach below is a natural next step. Lanikai and Kailua at first light are two of my favorite places for family photos. A few recent mornings down on the sand: Lanikai sunrise session, adventures in Lanikai, Hawaii lifestyle films and photography. And if it looks like something your family would be into, here’s where to start.
Lanikai Pillbox Hike FAQs
The opening section of the trail is slippery in both wet and dry conditions — packed clay after rain and loose gravel when dry can both send you sliding. It’s short, and there are ropes and trees to grab onto, so you’re not going to slide off the mountain, just possibly onto your backside. This is actually the section the current trail improvement work is addressing, with switchbacks planned to make it considerably more manageable. Go in knowing what you’re getting into, wear shoes with real grip, and take your time on the way down as much as the way up.
A: No reservation is currently required. A reservation system has been discussed as part of broader visitor management planning for the trail, but nothing is in place yet. Check the DLNR website before your visit for any updates, as trail improvements currently underway may result in temporary closures.
A: It depends on the kid. The opening section is steep and slippery in both directions; loose gravel when dry, packed clay when wet. Once you’re on the ridge there are real drop-offs with no guardrails. Kids who can follow instructions and stay close to adults do fine. If you have a runner, this is worth thinking about carefully. Wear shoes with real grip and take the descent as seriously as the climb. The scrambling sections tend to be the part kids enjoy most, and most families with school-age kids make it without trouble. Little ones in carriers work too, though the steep entry is harder with extra weight on your back.
A: Sunrise is the better call for most families. The trail faces east so you get to watch the sun rise over the water behind the Mokes. It’s also cooler, less crowded, and parking at Kailua Beach Park is easier that early. Sunset is lovely but you’ll be hiking out in the dark. Bring headlamps if that’s your plan, and know that parking will be considerably trickier, especially in summer and over holidays.
A: No, dogs are not permitted on the trail.
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