The next stop, Diamond Head Crater, is considered the most popular trail. It likely sees twice the amount of hikers that Manoa Falls does. Unlike the gentle grade of the last trail, this one is much more vigorous. Even though you start off on a concrete path that seems forgiving, it quickly morphs into switchback city! From the crater floor to the summit you will climb 560 feet in less than a mile (0.8 to be exact). By the time you weave your way through the switchbacks, you are begging for mercy as the sun is blazing and the sweat starts pouring. It would do you good to be very well hydrated before attempting this trail unless you are a fan of fainting.
During this hike you will encounter many obstacles, such as staircases, and tunnels, but I suppose that this trail wouldn't be so popular if the views weren't worth every drop of sweat shed along the way. The vista was most definitely a stunning sight with the Pacific Ocean and Wakiki coastline in full view. As a matter of fact, this is an ideal spot to see a panoramic view of the Leeward side of the island.
One good thing about hikes that make you work so hard going up, you know it's all downhill from the top! Manoa Falls & Diamond Head are in very close proximity to one another and can easily been done one after another. I would suggest hiking Diamond Head earlier in the day due to the blazing sun. Manoa Falls would be a great hike to do midday because you have a canopy above head nearly the entire time on the trail.
Go beyond the beaches and see another side of Hawaii!