speed — Special Report
Faster Than a What, Exactly?
Miles per hour and km/h, expressed in sprinters, animals, and electric cars
Speed is the measurement that makes us feel most inadequate. We drive at 65 mph on the highway, proud of our efficiency, while Voyager 1 coasts through interstellar space at 38,000 mph. The scale is humbling. The comparison is useless. We do it anyway.
Usain Bolt, the fastest human ever recorded, reached a top speed of 27.33 mph during his 100-meter world record in 2009. This sounds impressive until you realize a cheetah can sustain 70 mph for short sprints, a peregrine falcon dives at over 200 mph, and the average commercial airplane cruises at 575 mph. Bolt would be lapped before the cheetah broke a sweat.
“Usain Bolt topped out at 27.33 mph. You are not Usain Bolt. The converter knows.”
Cars complicate the picture. A Tesla Model S Plaid reaches 200 mph and will do 0-60 in under 2 seconds, which sounds like a number until you're pinned to your seat and your face is rearranging itself. A bicycle tops out around 30 mph for a serious rider. A brisk walk is 3 mph. The range of human-speed experience spans three orders of magnitude.
Sound travels at 767 mph at sea level. Light travels at 670,616,629 mph. Between those two reference points lies everything humanity has ever built that goes fast. We've covered most of the range from walking to supersonic. The speed of light remains a goal.
Our speed database has 11 verified velocities, from Olympic sprinters to spacecraft. All values sourced from official records, manufacturer specifications, and NASA.