I try to stay in shape year round, but with elk season only a couple of months away, I need to pick up the pace so that I don't kill myself when (and if) I need to pack out a big bull ( hasn't been a problem for a few years, but hope springs eternal). Anyhow, my regimen is along these lines;
Weight training (pushups, pullups, rows, etc) 3 times a week.
Mountain biking at least 4 times a week; off road riding for an hour or so, road riding for 30 minutes to 1 hour. I try to keep a pace that keeps my breathing labored, and a bit of pain in the quads tells me that I am gaining. Off road riding helps with balance, and works the upper body, at least where I ride.
Hiking, 4 to 5 days a week, for at least one hour per session. I try to hike on hilly terrain. One day a week, I will do a hike up a mountainside that gives about 1500 feet of vertical in a little over a mile.
If I do my part, this training will keep me in shape for elk country.
Those of you that hunt the high country, what do you do to keep ahead of the mountains?