Pu‘u O Hulu (Pink Pillbox) via Wai‘anae
Pu‘u O Hulu (Pink Pillbox) via Wai‘anae
4.8
(1139)
7,626
riders
00:36
10.2km
40m
Cycling
Embark on a pleasant touring bicycle ride along Pu‘u O Hulu (Pink Pillbox) via Wai‘anae, an easy 6.3-mile (10.2 km) route that takes about 35 minutes to complete. You will experience a gentle elevation gain of 140 feet (43 metres) as you cycle. The route offers expansive views of the…
Last updated: April 23, 2026
Waypoints
Start point
Parking
Get Directions
5.10 km
Highlight • Viewpoint
Tip by
10.2 km
End point
Parking
Way Types & Surfaces
Way Types
5.41 km
4.59 km
< 100 m
< 100 m
Surfaces
10.00 km
187 m
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Elevation
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Weather
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Today
Saturday 30 May
27°C
19°C
32 %
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Max wind speed: 12.0 km/h
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This route was planned by komoot.
Despite some listings, the Pu‘u O Hulu (Pink Pillbox) trail is not suitable for touring cycling. It is predominantly a challenging hiking trail with rocky, rugged, and uneven surfaces, steep inclines, and sections requiring minor rock scrambling. Touring bicycles are not designed for such terrain.
This is a challenging hiking trail, not an easy bike ride. The terrain is rocky, rugged, and uneven, featuring numerous switchbacks with a steady incline. You'll encounter sections requiring minor rock scrambling and navigating natural rock steps. Parts of the trail can be very steep and slippery, especially after rain, with an average grade of 20.5% over its length.
The primary attraction is the historic World War II-era concrete bunkers, known as the Puʻu O Hulu (Pink Pillbox), one of which is famously painted pink. From the ridge and the pillboxes, you'll enjoy breathtaking panoramic views of the Wai‘anae Mountain Range, the western coastline, the Pacific Ocean, and the surrounding areas of Nanakuli and Mā'ili. On clear days, you might even see Mount Ka‘ala.
The trail is located on the Wai‘anae side of O‘ahu. While specific parking details are not provided, the trail is accessed via a trailhead in the general vicinity of Wai‘anae. It's advisable to research current parking conditions and access points before your visit.
Information regarding dog-friendliness for this specific trail is not available in our current data. It's recommended to check local regulations or signage at the trailhead regarding pets before bringing your dog.
Our current information does not indicate that permits or entrance fees are required for the Pu‘u O Hulu (Pink Pillbox) trail. However, regulations can change, so it's always a good idea to verify with local authorities or park services before your visit.
The trail is popular year-round, but conditions can vary. It's best to visit on clear days to fully appreciate the panoramic views. Be aware that the trail can become very steep and slippery after rain, so checking weather forecasts is crucial. Many hikers enjoy visiting for sunrise or sunset views.
Given the trail's challenging and rugged nature, it's recommended to bring sturdy hiking shoes with good grip, plenty of water, sun protection (hat, sunscreen), and possibly trekking poles for stability on steep or slippery sections. A camera is also a must for the incredible views.
While the Pu‘u O Hulu trail itself is challenging, if you're looking for easier options in the Wai‘anae area, it's best to research other local trails. This specific trail is not recommended for beginners or young children due to its steep and rugged terrain.
The 'Pink Pillbox' is one of the World War II-era concrete bunkers located along the ridge. It gained its nickname because it's famously painted pink, which is said to be a symbol of cancer awareness. These pillboxes are often adorned with colorful murals and graffiti, adding a unique cultural element to their historical significance.
Yes, the route also passes through sections of the Waianae Pillbox Trail.