Plan Ahead: For the best chances at spotting a rainbow, visit in the morning. Rainbow Falls doesn't require a long hike and can easily be a quick, 15-minute stop. Located at Wailuku River State ...

Fun Fact: Manoa Falls is located in Manoa Valley, home to the University of Hawai'i at Manoa. The university's football team, the Hawaii Rainbow Warriors, gets its name from the rainbows often ...