Train like a pro to perform like one. Bryan Pope of Earth Native Wilderness School recommends these exercises with high reps and low weight to build the strength and endurance of a mountain guide.
Quads/glutes: sumo squats
Stand with feet three to four feet apart and toes pointing out at a 45 degree angle. Bend your knees until your thighs are parallel with the floor, making sure not to let your knees extend past your toes. 3 sets of 20 reps.