Fort Carson is a big place and it's hard to narrow down the areas to hunt. The best way to do so is by putting leather to the ground and getting some exercise. Those hills are no joke!
Also, I highly recommend
http://www.g2outdoors.net They have digital maps of Fort Carson that you can use on your smart phone. It has saved me numerous times from getting lost. If you plan to hunt on Fort Carson you NEED this map!