Puʻu Huluhulu Trail

The Puʻu Huluhulu Trail is generally considered moderate to easy. While much of the trail is relatively flat and easy, the overall rating is moderate due to a 1/4-mile steep ascent to the summit of the Puʻuhuluhulu Cinder Cone. It's suitable for families looking for a rewarding day hike.

You'll encounter diverse terrain, including sections across lava flows from past eruptions (like the 1969-1974 Mauna Ulu flow). Expect uneven and unstable ground, razor-sharp lava, and deep earth cracks. The path across the lava fields is marked by ahu (stacked rocks). Sturdy shoes are highly recommended. The final climb to the cinder cone is steep.

The trail offers several unique sights. You'll traverse barren lava fields contrasting with the lush 'kipuka' of Puʻuhuluhulu Cinder Cone itself, which is a forested oasis. Look for fascinating geological formations like lava tree molds. From the summit, you'll get panoramic views of Mauna Loa, Mauna Kea, the coastline, and the steaming Mauna Ulu Lava Shield, with the Pacific Ocean visible on clear days.

The trail begins at the Keauhou Trailhead. Parking is available at the trailhead, which is located within Hawaiʻi Volcanoes National Park. It's always a good idea to arrive early, especially during peak seasons, as parking can fill up.

The round trip typically covers about 2.5 to 3 miles (4-4.8 km) and takes approximately 2 to 3 hours to complete, depending on your pace and how long you spend enjoying the views from the summit.

No, dogs are not permitted on the Puʻu Huluhulu Trail. As this trail is located within Hawaiʻi Volcanoes National Park, pets are generally restricted to paved roads and parking areas only, to protect native wildlife and ecosystems.

Yes, since the Puʻu Huluhulu Trail is located within Hawaiʻi Volcanoes National Park, you will need to pay the park entrance fee. This fee grants you access to the park for a set number of days. Specific permits for hiking this particular trail are not typically required beyond the park entrance fee.

The trail can be hiked year-round. Hawaiʻi Volcanoes National Park generally experiences mild temperatures, but weather can change quickly. The best time to hike is often during the cooler, drier months, but always check the current weather forecast before heading out. Early mornings are ideal to avoid the midday heat and potential crowds, and to increase chances of clear summit views.

The Puʻuhuluhulu Cinder Cone is a unique 'kipuka' ecosystem, a forested island spared by lava flows. This makes it an excellent spot for birdwatching, offering opportunities to spot native Hawaiian forest birds. You'll also see native koa and other dry mixed forest plants, contrasting sharply with the surrounding barren lava fields.

Yes, while the primary route is the Puʻu Huluhulu Trail itself, sections of the hike also follow parts of the Nāpau Crater Trail.

Given the uneven and sharp lava terrain, sturdy, closed-toe hiking shoes are essential. Bring plenty of water, sun protection (hat, sunscreen), and layers of clothing as weather can change. A light rain jacket is also advisable. Don't forget your camera for the panoramic views!