A 40 kilometer time trial is a great test of a cyclist's fitness. However, it is not sheer power that guarantees the fastest time in a race against the clock. Power moves a cyclist forward by overcoming the three main factors that resist a cyclist's forward motion: gravity, aerodynamics (wind), and friction (rolling resistance).
This past Saturday was host to the annual Wisconsin State Time Trial Championships, near Milwaukee, WI, on the famous (and flat) Double Bong TT course. Since we at CycleOps are headquartered in Madison, Wisconsin, we were able to get some power files from the Men's Pro/1/2 race to see a real-world example of how the best power output doesn't always equate to the best time.