The get to the island of Lanai, you can take Lanai Expeditions
ferry. It leaves Lahaina harbor 5 times a day. The cost is $25 each way
plus $10 for your bike. The trip takes about an hour. Lanai is in the background.
(Click on pictures for a better view.)

Lanai, 139.5 sq. miles, is part of Maui County. It has over 100 miles
of doubletrack roads ideal for mountain biking. The highlighted route is
about 40 miles.