Our very first hike on Oʻahu was the Ka’iwa Ridge Trail (also known as the Lanikai Pillbox Hike) and we were so excited to finally see what the famous pillboxes were all about.
Before we even started, though, we were met with something that made us almost rethink doing this hike …a warning sign at the trailhead explaining that hikers have needed rescue here. We decided that we would just try it and if it was to difficult we would turn back.We assumed the warning was because the trail was short and steep,so we didn’t fully grasp or understand what the sign meant at the time .
Looking back… the rope at the beginning should have been our first clue.
What the Trail Is Really Like
Right from the start, the incline is no joke. It’s steep, dusty, and requires a bit of grabbing the rope to pull yourself up which was especially helpful for little ones. That rope at the beginning? Definitely not just for decoration.
As we climbed higher, we quickly realized something we hadn’t fully expected… this trail is truly a ridge. At times, you are walking along a narrow path with drop-offs on both sides. For those of us who aren’t the biggest fans of heights, this added a whole new level of challenge.
But the views!! They completely stopped us in our tracks.
From the ridge, you can see the turquoise waters of Lanikai Beach and the iconic Mokulua Islands (often called “the Mokes”) rising out of the ocean. It felt like we could see for miles each direction . It was breathtaking, humbling, and absolutely worth every hard step.
Reaching the Pillboxes
We took our time climbing, encouraging one another as we went, until we reached a flatter section…a small plateau. From there, we had our first glimpse of the first pillbox .
It was such an exciting moment when we reached the pillbox! Standing there, seeing people on top of it, taking in the views…it felt like such a reward. The steep drop offs are crazy around it so our family chose to stay on one side and not climb on top, even though others were.It was still an unbelievable experience just standing next to it!
From that first pillbox, you can also spot the second one just a short distance away…about 100 yards further along the ridge.
The Descent (The Real Challenge)
If the climb up tested our endurance, the way down tested our balance.
The trail is dry and dusty, and the dirt can be very slippery , especially on the steep sections. It almost feels like your feet want to slide out from under you, which made this part especially tricky for our little ones.
We slowed way down, took careful steps, and helped each other navigate every section safely.
The People Made It Even Better
One of the sweetest parts of this hike was the community on the trail.
Strangers cheering each other on, both going up and coming down, created such an encouraging atmosphere. There’s something special about shared challenge and shared beauty that brings people together.
History of the Pillboxes
One of the reasons we really wanted to do this hike was the history behind it.
The pillboxes you see along the trail were built during World War II as military observation stations. Their purpose was to help spot incoming ships or aircraft and protect the island from potential attacks.
Today, they stand as historical reminders of that time, while also offering some of the most scenic viewpoints on Oʻahu.
Parking & Trailhead Info
- Location: The trailhead is located in the Lanikai neighborhood in Kailua
- Parking:
- Street parking is available along residential roads near the trailhead
- There is a Golf Course parking area that is monitored where you can pay for parking ( We did this and made it easier for parking and safety)
- Be mindful of posted signs and respect the neighborhood (no blocking driveways)
- Arrive early…parking fills up quickly
- Distance: ~1.6 miles round trip ( it took us just over an hour round trip )
- Elevation Gain: ~500–600 feet
- Trail Type: Out and back
- Best Time to Go: Sunrise , Sunset or early morning (less heat, fewer crowds)
Final Thoughts
By the time we made it back down, we were tired, dusty, and so thankful that we did it .
For a relatively short hike, this one truly challenged us, but the views? Absolutely priceless.
Would we do it again?
Without hesitation…yes!!!!
Check out our reel of our hike ⬇️
Check out our other hikes and must see in Oahu ⬇️
