Who holds the speed record on water today?
Who holds the speed record on water today? The current unlimited record is 511.11 km/h (317.59 mph), achieved by Australian Ken Warby in the Spirit of Australia in 1978.
How fast is Usain Bolt?
In 2011 Belgian scientists used lasers to measure Bolt's performance in the different stages of a 100-meter race held in September that year. They found that, 67.13 meters into the race, Bolt reached a top speed of 43.99 kilometers per hour (27.33 miles per hour).