I am transitioning from running to biking with the intent on eventually completing a 100 mile ride. I need to get a bike and was wondering if anyone had any imput on the style. I am torn between a hybrid with the more upright position and a comfort road bike such as the specialized sequoia or trek pilot. Most of my riding will be of the fitness nature, not from a competitive stand point. I don't even know if a hybrid can be comfortable or if anyone ever uses these for 20 plus miles at a time. Any imput would be appriciated.