Bee you have a great workout. I don't know if they are availbale to you but what gets my cardio and enduarnce along with the ability to not only hike up but down, is to run stadium stairs. I run 45-60 minutes up and down our local college stadium stairs. It is the greatest workout ever!!! First of all it is outside so you aren't cooped up in a gym. You have to start off slow walking up and down at first cuz I dont care what kind of shape you are in your legs and calves are going to scream when you first start.Your lungs will scream for air at first. Within a couple of weeks you will be saying damn this feels good.
