A good friend and I are trying to research training programs for some of the spring time centuries. The first one we have chosen has three substantial climbs in it. I'm from E.TN so hills are nothing new. We both are at the same level where 75-100 miles a week is very comfortable, but we don't have seven days to ride this race. Where are some good places to learn about different programs? And, does anyone have good advice or a program they used and liked?