I don't race, but DH and I did 2 centuries and one metric. After the last century 2 weeks ago, I felt a major sense of letdown, if not depression. I was in a bad funk for about a week. It really surprised me, and I felt like I should kick myself in the pants and get over it. Early in the season the husband wanted us to consider doing centuries, and I was convinced I could MAYBE do 50 miles. After going on a few longish rides and actually feeling really good, and with a friend convincing me we could do it, we DID do it. I think maybe the let down for me comes from the fact that I used to be a fairly competitive runner and there were always spectators at those events cheering for the finishers. I don't see very much of that at the organized centuries, and in my mind I know my road miles are going to become less as darkness and winter kick in. Also, along my bus route are road markings from one of the events, which is a daily reminder. I should probably be really amazed that we accomplished WAY more than I ever thought we could.