What's your fastest speed on the flats with no wind? This has to be on a regular bike, not a human powered vehicle or recumbent and not on a downhill. How fast can you pedal the bike any distance in a sprint? Be honest now!
To convert from kilometers per hour to miles per hour, divide by 1.609. In other words, 1.609 kph = 1 mph.
To convert from kilometers per hour to miles per hour, divide by 1.609. In other words, 1.609 kph = 1 mph.