Great workout. I kept a steady pace up and basically ran down, and my legs were pretty sore for a couple days. Can be done if you're in moderately good shape, just be sure to pace yourself at the beginning. It gets harder about halfway due to the steeper angle.
Steve M. on Koko Crater Trail
It is amazing!!!!!! I would use his app when hiking though because towards the beginning you can get lost at a couple points. Bring water and gaterade and more water and gaterade. The scene is worth going all the way up but be careful because it is slippery with mud in some parts. If you're older or have knee problems I advice not to go the entire way (can easily lose balance and fall). Make sure you bring enough food too, it is a workout. It took us about 3.5-4hrs because it is a constant slight uphill.