How fast does Mars spin?

Mars rotates on its axis once every 24 hours, 37 minutes and 22 seconds, according to Jerry Coffey of Universe Today. This gives it a day length similar to that of the Earth, though its years are considerably longer.

Mars is smaller than the Earth, which means less distance has to be traversed to complete a single rotation every 24 hours. At its fastest-moving point, the equator, the surface of Mars traverses at 868.22 kilometers per hour. At its north and south poles, as with any rotating planet, the surface simply spins in place and does not traverse at any speed.