Maui has plenty of trails for hikers of all skill levels. RELATED LINKS Back to Maui City Guide

Maui owes its very existence to Haleakala, the dormant volcano that dominates the island. The two-hour drive from Kahului to the crater rim is an extraordinary journey that leads from sea level to the 10,023-foot summit in just 37 miles. Many people make the drive only to gaze into the crater from a series of scenic overlooks, but if you come prepared for a rugged hike, you'll be in for a truly remarkable experience and a terrific workout.

The Sliding Sands Trail descends from a trailhead near the summit visitor center into a lunar-like landscape dotted with cinder cones and weathered lava flows. For a short day hike, follow the trail for a mile or two before returning the way you came, bearing in mind that the uphill leg will be made more difficult by the thin high-altitude air. If you're feeling fit and are prepared to devote a full day to the undertaking, continue down to the crater floor and return via the Halemau'u Trail, a strenuous 11-mile trek.

Either way you'll need sturdy hiking shoes, weatherproof clothing, high SPF sunscreen, a wide-brimmed hat and a good supply of drinking water. Guided hikes are organized by the National Park Service (www.nps.gov/hale) and by several private outfitters, including Hike Maui (www.hikemaui.com) and Maui Eco-Adventures (www.ecomaui.com).

For an inspirational prelude to your day on the trail, plan to reach the summit in time for sunrise. A very early departure is required, and you'll have to bundle up against the cold night air, but the sublime sight of daylight breaking over the crater is an experience you'll never forget.