I've just got the speed pro-went out on it did 17.5 miles in an hour top speed (i admit i was scared, new bike, is anything going to fall off etc) was 29.9mph. I reckon 30-35mph is well within reach with right hill/weather conditions. Great ride, really fun, doesnt like ultra bumpy roads and at high speed slight chain jumping which is probably the cable stretching itself in, but i love it, and its more comfortable than the claud butler levante that i've just sold on. To be honest i can't think of any reason to switch back to a 'normal' bike.