Before I invest any money in a new bike I would like to know if its my bike or me that is so slow. I average 12 mph, I kid you not, you need to average 14-16 just to stay with the bike club. I've been biking for 4 years, 11 centuries, I have a giant cr2, I'm female 5'5 and weigh 112 lbs, so weight is not an issue. Bascially will investing in a carbon fiber bike make me at least stay with the group, really tired of not getting faster.