I completed my first century! Did it on my 1984 Shogun 100 which has been made into a single gear with a 46x18 gearing. The route had somewhere around 5000 feet of gain. It took me 5 hours and 30 minutes to complete, but sadly I discovered that the time kept rolling even in the two aid stations I stopped at, so it's slightly longer than I actually rode it in. Anyways, I'm pretty happy with that time.
It was pretty funny riding on a single speed, everyone seemed to pull up to say something about it or commented to someone else about it. But what really tickled me was that I managed to finish well ahead of the vast majority of the people there, and most of them had very nice bikes. I spent $100 on mine.