There's primitive camping, hiking and biking trails along a lot of pets on maui.
The island park covers about 1,962 acres of ground featuring forests, coves, dunes and some undeveloped beachfronts. https://medium.com/@thechuanparkfacilities/the-chuan-park-condo-the-ultimate-guide-to-your-new-home-66da8eadb5d9