Learn how to breathe with less air

For me, cycling is not so much asn activity, but a way to get out into the world and slow down. Although you try and go fast sometimes you need to look around on your bike to get the true reason why you are out there. Now when you are racing, that is a different matter, so here is my goal. 2:05. I want to summit Mt. Evans hill climb race in 2208 in less than 2 hours 5 minutes. Good goal but one where I need to learn to breathe with little air.