I think you should congratulate yourself, you're hitting 20 miles!! That's nothing to sneeze at, couch potatoes should be worshiping you!! I've started using a Camelback on my rides, it's much easier for me to use so I tend to drink more. I had issues at first when reaching down for my water bottle so I tended not to until I really needed a drink. My Camelback is a 2liter which is a lot of water in addition to my single cage.