Keoneheʻeheʻe (Sliding Sands) Trail

If you want Haleakalā’s big, Martian moment, this is it. Starting near the summit at the Haleakalā Visitor Center, Keoneheʻeheʻe drops straight off the rim into a vast basin of lava flows and multi-colored cinder cones. It’s stunning—and deceptively tough. The standard out-and-back is about 11 miles total with roughly 2,400–2,800 feet of elevation to reclaim on the return. You’re hiking at ~9,700–10,000 feet on loose volcanic cinder, so pace and water matter.

What you’ll see

Think “hiking on Mars”: sweeping views over the crater, stacked cinder cones in reds, blacks, and browns, and, if clouds pool below, the surreal sensation of walking above them. Keep an eye out for the endemic Haleakalā silversword (ʻāhinahina)—a silvery, iconic plant that grows right along the trail. Stay on the signed path; blocked spurs are there to protect this fragile flora.

Hiking experience and route options

This trail starts with the fun part (descending) and ends with the grunt (climbing back out). The farther you drop, the bigger the payback climb through soft cinder. You don’t have to do the whole thing to “get it”—turning around after 2 miles still delivers the crater’s essence. For a bigger day, many hikers combine Keoneheʻeheʻe with the Halemauʻu Trail for a cross-crater, point-to-point around 11.2 miles (car shuttle/logistics required). Backpacking into the crater is also possible via designated cabins and campsites with advance permits/reservations.

Logistics

Park at the Haleakalā Visitor Center lot by the summit; the trail starts at the southwest end near a kiosk/horse-loading area. Restrooms are at the visitor center; there’s no water—bring plenty. Entering before 7 am for sunrise requires a reservation. Weather swings fast up here: cold, windy, and intense sun are all common on the same day. Layers, a wind shell, sun protection, sturdy footwear, and trekking poles make a real difference on the loose cinders.

Best time to hike

Year-round is fine, but start early. Morning light pops the crater colors, temperatures are friendlier, and you’ll beat the typical afternoon clouds or showers. Summer can feel a touch milder, but the sun is fierce any time of year. If you’re here for sunrise, secure the reservation and head straight onto the trail as the crowds thin.

Should you hike it?

If dramatic volcanic scenery is your thing, this is a must. It’s strenuous, exposed, and high—but uniquely memorable. Respect the turnaround times, protect the silverswords by staying on trail, and you’ll have one of Maui’s most singular hikes.