5. Beartooth Highway, Montana and Wyoming:
If you are afraid of heights, this is probably not the best trip for you. At some point you will be at 11,000 feet! You will be starting off at Yellowstone and heading all the way to Red Lodge in Montana. Much of this trip will take you through mountains and forests, and vast expanses of land. This is a trip which absolutely must be on your ‘to do’ list, it rivals Route 66 when it comes to sheer epicness.