Southwest
you would have to travel northwest.
SW
South on I-25.
SouthWest
south
You would travel north to accomplish this trip.
Kuwait
Northwest.
Northwest
I used to be a tour leader in SA it depends on what part of the Andes you are going to - you could either do a tour or catch a bus to places like Cusco and then do a tour to Machu Pichu from there...
East
west