@Big Bird wrote:

…I do have a dilemma. Some of the caches will be directly off of ATV trails and routes. Easily accessible by ATV but not necessarily by hiking. How should I address this issue?
If the cache is close to parking I would provide the coordinates for parking but what should I do if it’s a 5 mile hike down an ATV trail which is not technically open to hikers?

Welcome to geocaching! Your questions aren’t that tough to answer. If you read the guidlines for cache placement you should be able to find what you need. The Reader’s Digest Condensed Version goes something like this (IMHO):
All you have to do is make sure you list that the trails are ATV trails. If foot traffic is allowed, just list the distance people will have to walk. If bikes are allowed, show that. Use the terrain ratings to show what the trails are like (rough, flat, soft, etc.). The distance doesn’t affect the terrain rating. This should be reflected in your description though…just so people know they’re in for a walk if they go. If the trails aren’t accessible on foot, the terrain rating has to be listed as a 5 star (due to the need of special equipment). When you submit your caches, the approver will let you know if they see an issue or something you need to fix about the hide. They’re a great group of guys and will work with you to get your caches listed for others to find. Good luck!
MajorBrat