A work in progress: My Get Home Bag

Since its a little more than 5 miles in an urban environ. You might consider both the pepper spay as well as one of the modern 3 million volt stun guns. The new ones plug right into the wall to charge and run about $30.

The pistol is fine but you may end up in a case where stealth and quiet is to your advantage.

And it doesnt matter how far. You really need a filter straw. If you get hung up halfway and have to wait things out or go around out of the way, your water will be gone and you dont want that.