Explore this 3.1-kilometer out-and-back trail near Honolulu, Oahu. Generally considered a moderately challenging route, it takes an average of 1 hour and 5 minutes to complete. Given its popularity, you'll likely encounter other hikers along the way. The trail remains open year-round and offers scenic beauty at any time. Please note that dogs are not allowed on this trail.

It's important to be aware of the trail's strict operational hours. Check the park website for updates, as the trail closes in the evening, and park gates are locked. For more information, visit: https://dlnr.hawaii.gov/dsp/parks/oahu/diamond-head-state-monument/

Diamond Head State Monument charges a fee for non-Hawaii residents to enter. More details can be found at: https://dlnr.hawaii.gov/dsp/parks/oahu/diamond-head-state-monument/

The Diamond Head Summit trail hike is among the most popular in Oahu, offering stunning panoramic views. Starting from the middle of the Diamond Head volcanic crater, the hike ascends approximately 500 feet up the side to the rim's top. Spanning over 475 acres, Diamond Head State Monument encompasses both the interior and outer slopes of the crater.

The crater, over 3,500 feet in diameter, is part of the Hawaiian volcano chain, dating back over half a million years. Referred to as "Le'ahi" in Hawaiian, meaning "brow of the tuna," the crater earned the name Diamond Head nearly 200 years ago due to British sailors' belief in the presence of diamonds in its side. Although no diamonds were found, the name persisted.

Constructed in 1908 as part of the Oahu coastal defense system, the trail features World War II bunkers atop, now supporting government antennas.

Beginning on a paved path, the trail ascends steep switchbacks, leading to the first set of stairs. After navigating through a tunnel, another set of stairs awaits before reaching the bunkers atop the rim. Once there, visitors can ascend to the bunkers' top for sweeping 360-degree views of the island and the Pacific Ocean, with Waikiki in sight.