Not for the faint of heart, this 8-mile trail starts in an open ridge along the Koolau Range, and requires hikers to rock hop through the Koloa Stream over 20 times, passing through native plants, fruit trees, a smaller waterfall, and a pool before reaching a fork. Venture left for a small waterfall and pool, or venture right, where you’ll pass smaller pools before arriving at a split-level 100ft waterfall. While it's hard work getting here, the lush falls are totally worth the trip. Of course, you’ll have to make your way back eventually, which means fording back over the stream. The entire trip can last you about eight hours, depending on your pace and the weather. Before you embark on your adventure, pick up a permit at Laie Shopping Center, and some snacks and water for the all-day excursion.
How to get there: Take Likelike Highway to Kahekili Highway, which becomes Kamehameha Highway and drive to Kokololio Beach Park.