To me it seems that after I hit 50 - 52 mph pedaling is pretty much worthless. At that point just tucking down and getting as little wind resistance as possible seems to be the best. So far my top speed has been 57.5 mph. I'm hoping for 60 this year. Not sure if it will happen or not, I'm going to be missing the extra 30+ pounds on when going downhill, going to be loving it going up though.