Q: Can you hike fantasy island -Guest
A: No, It is strictly a biking trail. There is a path to the north of the Bunny Trail that is a 40 mile loop that goes all around Tucson that you can walk/hike, there will be some area where it turns to dirt. Please notify me if you have another questions at firstname.lastname@example.org as I ride the bunny and bunny's revenge trail every Saturday.
Q: Do I need a permit -Guest
A: Yes, you need an Arizona State Land Use Permit. You can find the form here: https://land.az.gov/natural-resources/recreational-permits. Unfortunately you have to mail it in, they do not have an online payment option.
A: Update for question above about permit. You can now pay and print permit online. https://land.az.gov/recreational-permit-portal