It is approximately a half-mile from the trailhead. The trail follows the Pipiwai Stream and is a fantastic hike on Maui. It is 4 miles roundtrip, gaining 650-feet in elevation. It takes 2 1/2 - 5 hours to hike, depending on how much nature loving you do. The final destination is Waimoku Falls, which is ever larger than Makahiku Falls. Both falls are absolutely beautiful and more than well worth the hike to get to it. The bamboo forest is about the mid way point, and believe me, you'll know when you're there. It's like you've left the island for Thailand because of all the bamboo.
Take Highway 31 south from Hana. The parking lot for all falls and trails is located just past mile marker 42 on the ocean side of the road. Follow the signs to the trailhead. If you cannot find the trailhead, it's on the opposite side of the road from the 'Ohe'o Gulch National Park Visitor Center.