There is an abundance of hiking opportunities on the big island! There are hiking areas near some waterfalls, and other attractions, as well as at the volcanoes. Check the brochures closely to find out more on the ones you're interested in. We hiked to the recent lava flow at Kilauea. We hiked from our car to the site where the rangers were sharing information about the current lava flow (approximately 1 hour roundtrip).
Equipment: Daytime hiking at Kilauea: bring lots of water, durable walking shoes (thick soles) head covering, and don't forget your camera (both types!)
Night time hiking in Kilauea: same as above, but be sure to bring a flashlight, and hat is not necessary unless to keep your head dry should it decide to rain.
I was soooo looking forward to checking this out! But turns out there is very little hiking involved. It is worth stopping by and checking out but will take you perhaps 30 minutes to walk the entire area.
No entrance fee, open daily, no overnight camping
Equipment: Definitely sunscreen!
Good hiking shoes
Allergy medicine (just in case)
Snacks like fruit and bread