Hi, Iam new to cycling as an adult...I rode an incredible amount as a kid, but am just getting back to it.I bought a Trek 7300 fx Hybrid and have rode a bunch of times each ride being between 13 and 24 miles. My concern is, does the hybrid bike, like this one restrict speed? I mean Iam in pretty good shape, male, 34 and I ride fairly hard and I only average about 12 m.p.h.... the terrain is average with normal conditions......I know road bike riding averages anywhere between 17and 25 m.p.h. under similar conditions.....I just don't if that bike wasn't made for running or Iam just a weak rider.....