Well first off welcome to the forum. Next you need to narrow the geographic area down a bit on your question. What part of the country are you looking to hunt? What states cou;ld you realisticly be able to get to?
And take it from there.
Every year many hunters and outdoorsman and women come out west from the midwest and east coast to hunt the prized mulies and elk. One topic that comes up often is altitude sickness. My advice for flatlanders is to get into the best possible shape. Start months before your hunt, usually really ramping up my cardio around March or April.
I run 5-10 miles 3 times a week, and also go for walks carrying my pack with about 50lbs to simulate what could be on my back. Another useful tip is to drink A...