Koko Head Stairs (Koko Crater Railway Trail)
Kailua / Waimanalo
The Koko Crater Railway Trail climbs the western slope of Koko Crater, an extinct volcanic tuff cone in East Oʻahu. Originally built during World War II to transport military personnel and supplies to radar installations on the summit, the railway now serves as one of Hawaiʻi's most iconic hiking routes.
Unlike traditional mountain trails with switchbacks, this route climbs almost straight up the crater using uneven railroad ties, making it feel like climbing a giant outdoor StairMaster.
Why Roamwise recommends this
The Koko Head Stairs is Oʻahu's ultimate cardio hike—a relentless climb up 1,048 historic railroad ties to one of the island's finest panoramic viewpoints. Its combination of World War II history, volcanic geology, and sweeping views of Hanauma Bay, Diamond Head, and the Pacific makes it a bucket-list experience for fit hikers. While technically straightforward, the steep grade, intense sun exposure, and demanding descent require preparation, making it a trail that rewards endurance with unforgettable scenery.
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- Hazards / conditions:
- Continuous steep climbing; Uneven railroad ties; Heat; No shade; Fatiguing descent; High heart-rate effort
- Safety notes:
- Best season: Year-round
- Best arrival time:
- Sunrise–8:00 AM
Reviews: Google MapsYelp
Local tips
- •Start before 7:00 AM to beat both the heat and the crowds.
- •Pace yourself—many hikers stop every 100–200 steps.
- •The descent is often harder on the knees than the climb.
- •During winter (November–May), scan the ocean from the summit for humpback whales.
Pairs well with: Kona Brewing Hawaii Kai, Teddy's Bigger Burgers, Assaggio Hawaii Kai, Island Brew Coffeehouse, Koko Crater Arch Trail, Koko Crater Botanical Garden, Makapuʻu Point Lighthouse Trail, Hanauma Bay Nature Preserve, Sandy Beach
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