David B.
Google
Ok, listen. The waterfall is amazing. The swim in the tepid waters is a welcome relief after the long hike. Some call the water frigid. Having swam in glacier fed lakes, it was not nearly that cold, but it was a bit chilly. The chance to swim behind the waterfall and sit on the natural rock ledges while the cool water soothes your sore muscles and the mist kisses your face is amazing.
Now, the hike. It is listed as moderate on many trail sites, and while there are moderate stretches, there are some very strenuous stretches, especially the last half mile, scampering up rocks and back and forth over the stream. The 2 miles to Hanakapiai Beach is a mile up to stunning views of the coast far below. The mile down comes as a psychological break, but there are still slippery patches.
I rested at the beach, wading in the stream and watching the violent waves crash in. We left half our party there, including the two year old.
The next two miles were seriously challenging for me. Wish I had my trekking poles and more water.
You need good shoes! I mean it. Tevas, or other open toed sports sandals are not good shoes, nor are water sock, flip flops, or running shoes. All of which I saw on the trial. You need good hiking shoes.
Water. You need lots of water. We didn't bring enough and we felt it.
With all that said, the pay off was worth it. I don't think I would've felt the hike to the beach was worth it, in and of itself, though it was nice. Push on to the waterfall. Be prepared and you will have a great time.