Sperm may be referred to as little swimmers, but they’re actually more like Olympic swimmers… who jump off diving boards… while wearing jetpacks. Although you might assume it makes a difference when it comes to getting pregnant, semen expulsion speed doesn’t actually have an effect — positive or negative — on impregnation. Yet and still, the average speed at which of these “swimmers” are expelled may surprise you.
According to Mark Elliot, director of the Institute for Psychological and Sexual Health in Columbus, Ohio, it’s an incredible — wait for it — 28 miles per hour. To put that into perspective, that’s faster than Usain Bolt, the world’s fastest runner. It’s also faster than the speed you’re allowed to drive in many residential areas.
After their initial dive into the pool, so to speak, sperm slow down considerably. As Elliot told Men’s Health, it takes nearly five minutes for sperm to reach the cervix and as many as three days to get to an egg.