Your Guide to Oahu’s Lanikai Pillbox Hike (Kaʻiwa Ridge)
If you can only squeeze one hike into your Oahu vacation, my vote is for the Lanikai Pillbox Trail. It’s one of Oahu’s best short hikes, and it is a personal favorite of mine after hiking a handful of ridge hikes on the island.
The 0.8 mile trail might be steep and rocky, but 360-views at the top make the quick scramble up so worth it. You’ll see the lush ridged Ko’olau Mountains to the east, Kailua Bay and town to the north, Waimānalo Bay to the south, and of course, the iconic Moke ‘Twin Islands’ in the east. On a clear day, you can even see the A‘alapapa reef peeking through the turquoise Pacific ocean!
If you’re thinking about adding the Lanikai Pillboxes hike to your Oahu itinerary, you’ve come to the right place! Keep reading, I’m sharing details on where to park legally and respectfully, the best time to hike (hint: sunrise!), what to bring, how to stay safe on the trail, and more.
👋🏽 Note from the author: Did this article impact the way you planned your trip? Have any questions? Please comment at the end of the article! It helps this blog grow and helps me know what types of articles to write more. 💛
☀️ My Oahu Favorites 🌺
🐬 Swimming With Sharks or Dolphins: Ever dreamt of swimming with a pod of wild dolphins… or diving with sharks? Check out my favorite shark tour and dolphin tour.
🐠 Lanikai Beach & Byodo In Temple: Lanikai is Oahu’s most beautiful beach and Byodo-In, a stunning Japanese style temple is just thirty minutes away. Visit both in one day if you’re pressed for time.
🌺 North Shore Day Trip: No Oahu vacation is complete without a visit to the quintessential North Shore. Go snorkeling at Shark’s Cove, sign up for surf lessons, and enjoy acai bowls at Haleʻiwa Bowls.
🚁 Scenic Helicopter Ride: On this 45-minute ride you’ll get to fly over Hanauma Bay, Lanikai, Diamond Head, and Sacred Falls, one of Oahu’s most breathtaking sites that can only be seen from above. Browse all Oahu helicopter rides.
Lanikai Pillbox Hike in Kailua, Oahu
The Lanikai Pillbox Hike (Ka’iwa Ridge Hike) is a short but challenging hike up and along a mountain ridge overlooking Lanikai Beach and the Mokulua Islands in Kailua, Oahu.
Like many other ridge hikes on Oahu, Ka’iwa Ridge has rapid elevation gain, no shade, slippery terrain, unforgiving cliffs, and a few scrambles along the way.
But after only about a 20 minute journey to the top, you’re rewarded with some of the best views on the island, plus two abandoned military outposts.
Fun Fact: According to a community-run organization in Lanikai, those structures on top of Ka’iwa Ridge are not actually pillboxes, since a military pillboxes is used for defensive purposes. The so-called Lanikai Pillboxes were created by the Coast Artillery in 1943 and equipped to monitor maritime activity, but never equipped with defensive armament. You can read more about the history of Ka’iwa Ridge here.
Quick Facts
- 🥾 Length: 1.6-miles roundtrip
- ⛰️ Elevation gain: 613 ft
- ⏰ Time to hike: 20-30 minutes in, 20-30 minutes out. Plan on 1+ hour if you intend to spend time at the top.
- 🏋🏽 Difficulty: Hard. But keep in mind that it is a very short hike. Most active people should be able to hike it without issue.
- 🌺 Reasons to hike: Panoramic views of Kailua, Lanikai Beach, the Mokulua islands, the Ko’olau mountains, and Waimānalo. Plus, the chance to see two World War II bunkers.
- 🌅 Best time to hike: Sunrise! It’s the coolest time of the day, and you get to watch the sun rises over the ocean and Mokulua islands, illuminating the surrounding mountains, valleys, and bays with golden light. If you can’t make it for sunrise, aim for the late afternoon because the trail is both busy and HOT midday.
- ⚠️ Things to be aware of: Lanikai Pillbox Hike parking can be difficult (but not impossible). Be sure to read the parking section of this article for more info. Also, despite its short length and popularity, this can be a dangerous hike due to the rough terrain and nearly constant cliffs with no railings. People have died and been airlifted on this trail. Be careful with dogs and children, and be sure to wear the right type of shoes, I personally always bring these Lone Peak Altra trail runners on every Hawaii vacation now because they’re easy to pack and super grippy!
Additional resources:
How to Get to the Lanikai Pillbox Trailhead
The Lanikai Pillbox Trailhead is located on the edge of the Lanikai residential neighborhood and next to the Mid-Pacific Country Club.
It’s about 45 minutes from Waikiki, an hour from the North Shore, and less than ten minutes from the center of Kailua town. It is a short walk from Lanikai Beach (one of the best beaches on Oahu).
The best way to get to the trailhead is with your own car, but there is a bus stop a short walk away near Lanikai Beach.
Note: There is technically a second trailhead for the Lanikai Pillbox Back Way Hike. This “Lanikai Back Way” trail passes through private land and is closed to the public. However, if you’re not careful, your GPS may route you to this trailhead, which is about 10 minutes away from the main trailhead.
Helpful Tip: The main trailhead is marked on my free Oahu Google Map, along with 60+ of my other favorite trails, beaches, local businesses, and fun spots on Oahu!
Parking Details
There is no official parking lot for the Lanikai Pillbox trail, so you must parallel park in the Lanikai neighborhood.
Street parking is extremely limited, and it’s shared with people who live here AND beachgoers heading to Lanikai Beach, which is one of the island’s most popular beaches. You’ll have the best luck finding a parking spot early in the morning.
Please park legally and respectfully.
- ❌ Do not park in bike lanes
- 📐 Make sure your car is parked at least 4 feet from driveways, 10 feet from fire hydrants, 10 feet from street corners, and 30 feet from stop signs
- 🚙 Park facing the direction of traffic
- 🤫 If you park early in the morning, consider locking your car quietly from the inside (instead of with the fob) to reduce noise for sleeping residents
- ⚠️ If you’re unfamiliar with parking laws/regulations in Hawaii, check out this resource from the City of Honolulu
If you can’t find any parking in the Lanikai neighborhood, the closest public parking lot is at the Kailua Boat Ramp.
More Things to do in Kailua, Oahu
Even after seven trips to Hawaii, my husband and I keep coming back to Kailua! It’s such an underrated, fun part of the island. If you’re already coming to this side of the island to hike the Lanikai Pillboxes, here are a few more things to do in Kailua:
- Visit Oahu’s most beautiful beach, Lanikai Beach
- Kayak to the Mokulua Islands or Popoia (how to rent a kayak in Kailua)
- Wander through the Kailua Farmer’s Market
- Taste Hawaiian chocolate at Manoa Chocolate
- Drink local craft beer at Lanikai Brewing Co.
- And more!
Read my full guide to the best things to do in Kailua, Oahu!
Is Oahu’s Lanikai Pillbox Trail Worth Hiking?
If you are physically able, yes! The hike up might be a bit of a challenge but my husband and I were able to get to the top in only 17 minutes, and then the views up there are some of the best in Hawaii.
We did the hike at sunrise, which I highly recommend as you’ll have an easier time finding parking, the trail will be less crowded, and you’ll beat the heat!
If you do the hike, please hike carefully, pack out your trash, and be respectful to the residents in the Lanikai neighborhood.
Thanks for reading!
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