ha, I was planning on doing the seagull century (extremly flat) on my fixed gear, since I didn't feel like bringing my bike on the train. However, I made the mistake of telling my parents ahead of time...My mom totally flipped out. she was like, "YOU CANT RIDE 100 MILES WITHOUT COASTING!" and I was like, "people do it all the time" and she was like, "WELL, YOU'RE NOT GOING TO!". I had no idea that she felt so strongly about it. from then on, when I refer to my bike as the "fixed bianchi" she says, "you mean the one you broke, right?"
I rode the century, and shifted maybe twice. In the future, if you want a good fixie century, do the seagull. on the eastern shore of maryland, there are no hills whatsoever.