Ziplining lets you satisfy your inner Tarzan by soaring high above deep gulches and canyons. A harness keeps you supported on each ride. There are weight restrictions, and you should wear closed-toe athletic-type shoes and expect to get dirty. Although zipline tours are completely safe, you may want to reconsider this activity if you are uncomfortable with heights or have serious back or joint problems.
Kapalua Adventures Mountain Outpost. Opened in 2008, the zipline at Kapalua Adventures Mountain Outpost has almost 2 mi of parallel lines, enabling two riders to zip side by side. Prices range from $60 to $299. You must be at least 10 years old and weigh between 60 and 250 pounds. The Mountain Outpost also has a high-ropes challenge course, and a 35-foot pole from which you can leap to catch a trapeze. 2000 Village Rd., Kapalua, 96761. 808/665-4386 or 877/665-4386. www.kapalua.com/adventures.
Piiholo Ranch Zipline. The Piiholo Ranch complex, opened in 2008, has six ziplines—five parallel lines and one quadruple—plus a 12-person climbing tower. Ziplines range from 500 to 3,200 feet, and prices are $140 for four lines and $190 for five lines. You must be at least 10 years old and weigh between 60 and 275 pounds. Nonparticipants can watch the action from the shady "tree-house" observation deck. Piiholo Rd., Makawao, 96768. 808/572-1717. www.piiholo.com.
Skyline Eco Adventures (808/878-8400. www.zipline.com.). Skyline Eco Adventures operates in two locations on Maui: the original course on the slope of Haleakala, and the newer venue at 1,000 feet above Kaanapali. Good-natured guides give expert instruction and have you "zipping" confidently in no time. You must be at least 10 years old, weigh between 80 and 260 pounds, and be able to hike a moderate distance over uneven terrain in order to participate. For the Haleakala tour ($89), dress in layers, as it can get chilly at the 4,000-plus foot elevation, especially in the morning. The Kaanapali tour ($150) includes breakfast or lunch. Advance reservations are suggested, especially in summer, and discounts are available for online bookings.