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Routes
Bike touring routes & trails
United States
Honolulu County
Waianae

Pu‘u O Hulu (Pink Pillbox) via Wai‘anae

Easy

4.8

(1139)

7,626

riders

Pu‘u O Hulu (Pink Pillbox) via Wai‘anae

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

A

Start point

Parking

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1

5.10 km

Puʻu O Hulu (Pink Pillbox)

Highlight • Viewpoint

At the top of this trail is a pink pillbox that provides scenic views in real life, and some instagram worthy content. The pillbox provides some of the best views …

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B

10.2 km

End point

Parking

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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

Elevation

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Weather

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Today

Saturday 30 May

27°C

19°C

32 %

Additional weather tips

Max wind speed: 12.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Is the Pu‘u O Hulu (Pink Pillbox) trail suitable for touring cycling?

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.

What is the actual difficulty and terrain of the Pu‘u O Hulu (Pink Pillbox) trail?

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.

What are the main attractions or viewpoints along the trail?

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.

Where does the trail start, and is there parking available?

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.

Is the Pu‘u O Hulu (Pink Pillbox) trail dog-friendly?

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.

Do I need a permit or pay an entrance fee to hike this trail?

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.

What is the best time of year to visit the Pink Pillbox trail?

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.

What should I bring for a hike on this trail?

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.

Are there any alternative, less challenging trails nearby for beginners or families?

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.

What is the significance of the 'Pink Pillbox'?

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.

Does the trail intersect with any other well-known paths?

Yes, the route also passes through sections of the Waianae Pillbox Trail.

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