Sliding Sands and Halemau'u Trail Loop

This is a point-to-point hike, meaning it starts at one trailhead (Sliding Sands, near the summit) and ends at another (Halemau'u, lower down). You'll need to arrange transportation between the two. Many hikers use a shuttle service, arrange a car drop-off, or hitchhike. Parking is available at both trailheads, but spaces can fill up quickly, especially at the Sliding Sands trailhead for sunrise viewing.

Yes, the Sliding Sands and Halemau'u Trail Loop is located within Haleakalā National Park, so an entrance fee is required. If you plan to enter the park for sunrise (3:00 AM to 7:00 AM), you will also need a separate reservation for your vehicle in addition to the entrance fee. Check the official National Park Service website for the most current fee and reservation information.

The full loop, covering approximately 14.2 miles (22.8 km), is a strenuous full-day hike. Most hikers budget between 7 to 10 hours to complete it, depending on their fitness level, the number of stops for photos, and weather conditions. The high altitude can also affect your pace.

The terrain is incredibly diverse and often described as 'otherworldly.' You'll encounter sandy and gravelly sections, loose lava rock, and deep volcanic sand, especially on the initial descent into the crater. The path also includes 'A'ā lava flows with rough, jagged rocks. The ascent out via Halemau'u features steep, rocky switchbacks.

The trail offers stunning views of the Haleakalā crater and passes by numerous cinder cones. Notable features include the Kawilinau (Bottomless Pit) and Pele's Paint Pot, an area known for its colorful lava. You'll also pass by Split Rock. On clear days, distant views of Mauna Kea and Mauna Loa on the Big Island are possible.

Yes, the trail offers a chance to see the rare and endemic silversword plants, which are found nowhere else on Earth. Keep an eye out for the endangered nēnē (Hawaiian goose), which is the state bird of Hawaii. Remember to observe all wildlife from a respectful distance and do not disturb the plants.

Haleakalā National Park is accessible year-round, but the best time to hike is typically during the drier months from April to October. However, weather at high altitudes can change rapidly at any time of year. Always check the forecast before you go, as clouds can roll in quickly, and temperatures can drop significantly.

Due to the significant elevation changes and high altitude, it's crucial to dress in layers. Bring warm clothing, a rain jacket, sturdy hiking boots, sun protection (hat, sunglasses, sunscreen), and plenty of water (at least 3-4 liters per person). Trekking poles are highly recommended for the steep descents and ascents, especially on the loose volcanic terrain.

No, dogs are generally not permitted on hiking trails within Haleakalā National Park, including the Sliding Sands and Halemau'u trails. Service animals are an exception, but pets are restricted to paved roads and parking lots only.

Since this is a point-to-point route, the most common strategy is to arrange a shuttle or have two cars, leaving one at the Halemau'u trailhead (the exit) and driving the other to the Sliding Sands trailhead (the start). Starting at Sliding Sands means you begin with a long descent into the crater, saving the challenging climb out for the Halemau'u section when you're already warmed up.

The ascent out of the crater via the Halemau'u Trail is widely considered the most arduous part of the hike. It involves climbing approximately 1,000 to 1,300 feet over a couple of miles of steep, rocky switchbacks, often referred to as 'Heartbreak Hill.' The high altitude (starting near 9,740 feet) makes this climb even more demanding, so pace yourself and stay hydrated.