You can hike in national parks, state parks, and conservation land for free or for a small fee if you are exploring outside of these areas. The Department of Hawaiian Home Lands offers a number of hiking trails with varying degrees of difficulty spread throughout the island chain. Visit us at https://www.evernote.com/shard/s439/sh/de7bc383-608a-b6c7-0e8f-df1b3d905353/ff75b735da0518a1f2c8386e8f62c94a.