Amazing views on the hike. It was muddy so I would recommend going on a day where there isn't rain or plans for rain. The water fall is great, the jumps are great with the depths definitely deep enough. Great hike, but remember pick up your trash and respect nature.
To start off, you have to walk through the gates to the Royal Hawaiian golf course. (Unless there's another way that we don't know of. The way up took about 2 hours because I have asthma so we had to slow down a bit. We only made it to the first peak but it was absolutely gorgeous. The views are unbelievable. Wear really good shoes because you are climbing in mud, rocks, and even some rock walls that you have to pull yourself up on. We even saw a wild bore and some of her babies. The way down was much easier as it only took us about an hour or so!
This hike is so worth it and not as hard as some say. Definitely bring plenty of water and go EARLY. It gets really hot around 11am. The first part of the trail is entirely uphill until you reach the first peak. There is a lot of rock climbing along the way between the three peaks, but there is rope for those who need it. It took us 5 hours to complete the entire hike with a few stops for photos and to catch our breath. Overall, one of my favorite Oahu hikes.
VERY MUDDY hike when wet. We went on a rainy day and it was the muddiest hike I've ever done. I've done over 50 different hikes in my life.
However it was still great! The swimming hole at the end was top notch! In muddy conditions just barely doable with young children. In dry conditions it would be a breeze.