( 1500 miles ) Traverse 15 states along US 89 from Maine to Key West . Take US 61 from Mississippi to New Orleans , stop for gas in Mississippi . No U.S. highway hits more iconic national parks than US 89 .
Traverse 15 states along US 89 from Maine to Key West . Take US 61 from Mississippi to New Orleans , stop for gas in Mississippi . No U.S. highway hits more iconic national parks than US 89 .