We have a couple of options, all would be at least a 20 hour drive so I'm thinking we need a bag that can get us there.My advice: Do you have a place to go to when you bug-out? Figure that spot out, then leave your bug-out bag THERE.
A little while ago, "The fire planes are overhead, we need to go." A short car drive late, and we're opening our bug-out bags that were already sitting at the in-law's, and we could just open them up for fresh clothes and other essentials.
Outside the window by me right now: If you started walking...
1. You'll be walking a circle because most people don't know how to walk in a straight line in the wilderness, and experiments have actually verified that people do just that.
2. If you manage to walk straight, you'll be walking into several thousand square miles of national forest, when it comes to Mountain Lions, better you than me.