‘Aiea Heights loop

The trail starts and ends within the Keaīwa Heiau State Recreation Area. You can find parking available directly at the recreation area, which serves as the trailhead for the loop.

No, there are no entrance fees for the Keaīwa Heiau State Recreation Area, and permits are not required to access the ‘Aiea Heights loop trail. It's free to enjoy.

Yes, dogs are generally allowed on the ‘Aiea Heights loop trail. However, they must be kept on a leash at all times to protect the natural environment and ensure the safety of other trail users and wildlife.

The trail is enjoyable year-round, but visiting during the drier months can help avoid the muddier sections. Early mornings are often best for cooler temperatures and fewer crowds, especially if you want to catch clear views.

The terrain is a mix of dense forested areas and open ridges, primarily singletrack. You'll encounter exposed tree roots and gradual uphill climbs, with one steep switchback. Be prepared for potentially muddy and slick sections, especially after rain, and a stream crossing towards the end.

While the total duration can vary based on your pace and stops, most people complete the nearly five-mile loop in about 2.5 to 3 hours when hiking. For jogging, you can expect to finish it in approximately 1 hour and 18 minutes, as indicated by the tour data.

You'll be treated to breathtaking vistas of O'ahu's southern coastline, including Pearl Harbor, the Wai'anae Range, Honolulu, and even Diamond Head. The trail also offers views of the Halawa Valley and unique perspectives of the H-3 Freeway. Don't miss the Viewpoint - Pearl Harbor for a fantastic photo opportunity.

The trail is rich in diverse flora. You'll jog through groves of fragrant lemon eucalyptus, Norfolk pine, and native koa and ohia trees. You might also spot non-native species like strawberry guava. It's a great spot for birdwatching too.

Yes, it's considered suitable for beginner trail runners due to its relatively easy grades and well-defined path. While it does involve some sustained gradual climbs and a stream crossing, the upper half of the loop is particularly manageable with a gradual incline, making it a rewarding experience for various fitness levels.

Beyond its natural beauty, the trail has historical significance. It runs along a ridge replanted by foresters in the late 1920s and holds remnants of a historic B-24 bomber that crashed in 1944. The Keaīwa Heiau State Recreation Area itself houses an ancient Hawaiian medicinal heiau (temple).

Given the varied terrain and potential for mud, sturdy trail running shoes are highly recommended. Bring plenty of water, especially on warmer days, and consider insect repellent. A light jacket might be useful for cooler mornings or if you encounter rain.