I too signed up just to review this hike. I will be a little biased as I was born and raised out here on this side of the island (also an avid hiker) and have done this hike numerous times. I take no offense to the other reviewer, but I will counter his poor review with what I feel is a much fairer one:
1st off, there are no leeches (yet) here on Oahu or the in the State of Hawaii and the only parasite I can think of that would be up there would be Leptospirosis, which is in all the streams (water bound) across the state. Don't drink ANY unfiltered stream water!!
As with many hikes in Hawaii involving a stream bed, 20+ stream crossings are quite normal (at least for most valley hikes on this side of the island). As are lots of mosquitoes! Oh, and getting muddy and slipping around rocks is quite normal, too. I recommend using Tabis for stream bed hikes (tabis are Japanese foot socks, kind of like reef walkers, with a felt sole-perfect for rock hopping).
Yes, the hike is pretty LONG. 3.5 hrs sounds about right, so plan for ALL DAY. And it also isn't the prettiest hike, either. Its pretty much the same view for much of the hike (still nice, though). The water at the top is COLD, like every falls high up in the valley. And the end pool is not THE most spectacular (there are incredible falls out here, but I'm not telling). But its also not the worst hike!
I don't go very often (about every 3-5 yrs), only because of the time it takes versus the quality of the hike ratio. I do go into the lower part of the valley a lot to do short hikes with the kids.
All in all, its still a nice, beautiful hike. The scenery is still quite nice and I love it up there because of the solitude. I would recommend this hike for UPPER INTERMEDIATE and EXPERIENCED hikers only, due to the length and being a very deep, narrow valley hike with lots of rock hopping. There is the threat of flash flood with all streams, so go on a nice sunny day.
But its worth it to go at least once and see for yourself! One person's misery could be your heaven. That's my take on hiking. Get out there and good luck! read more