Everything you need to know about hiking Diamond Head Crater on Oahu — trail details, what to bring, how to get there, and tips to beat the crowds.
Diamond Head is Oahu's most recognizable landmark and its most popular hike. The 1.6-mile round trip trail climbs inside the volcanic crater to a summit with sweeping panoramic views of Waikiki, the Pacific Ocean, and the Ko'olau Mountains. It's accessible, rewarding, and — if you time it right — not even that crowded.
Trail Overview
- Distance: 1.6 miles round trip
- Elevation gain: 560 feet
- Difficulty: Easy to Moderate
- Time: 1.5 to 2 hours round trip
- Hours: 6:00 AM – 6:00 PM daily (last entry 4:30 PM)
- Parking fee: $10/car | Entry fee: $5/person
What to Expect on the Trail
The trail starts paved and relatively flat inside the crater. About halfway up it gets steeper, with a series of switchbacks carved into the crater wall. Near the summit you'll pass through two tunnels blasted through the rock during WWII — bring your phone torch. The final push involves a steep spiral staircase and a ladder, then you emerge at the observation deck with one of the best views in Hawaii.
Best Time to Go
Early morning is the clear winner. Gates open at 6am and the first hour is magical — golden light on Waikiki, cooler temperatures, and far fewer people. By 9am the parking lot fills and the trail gets congested on the narrow sections. Avoid weekends entirely if possible. The 6am slot on a Tuesday or Wednesday is the sweet spot.
Local Tip
Reservations are required for non-residents. Book online at hawaiistateparks.org up to 30 days in advance. Walk-ins are limited and often sold out by 8am on busy days.
What to Bring
- Water — at least 500ml, more in summer
- Sunscreen — reef-safe if you're planning to swim after
- Closed-toe shoes — flip flops are not suitable
- Small flashlight or phone torch for the tunnels
- Cash or card for parking and entry fees
- Arrive with a full charge on your phone for photos
Getting There
Diamond Head State Monument is at 18th Avenue and Diamond Head Road, about 2 miles east of central Waikiki. By car, take Kalakaua Avenue east and follow signs. Parking is $10 inside the crater — arrive early or it fills up. TheBus Route 23 stops nearby. Rideshare drop-offs work well; arrange a pickup time since cell service can be patchy inside the crater.
After the Hike
The stretch of Waikiki at the base of Diamond Head has some of the best beaches and restaurants on the island. Kaimana Beach (Sans Souci Beach) is quieter than central Waikiki and a 10-minute walk from the trailhead. For food, head back along Monsarrat Avenue toward Kapahulu for excellent acai bowls, shave ice, and local plate lunches.
