Is 12 miles per hour as fast as Usain Bolt?
It's about half as fast as Usain Bolt
The speed of Usain Bolt is about 23 miles per hour.
(at the Beijing Olympics, 2008) (a.k.a. Usain St. Leo Bolt, OJ, C.D.) (sprinter; 1986-)
Setting a world record, Usain Bolt ran a 100 m in 0:09.69 for an average speed of 23.10 miles per hour at the 2008 Olympics. Furthermore, Bolt's margin of record breaking — 0.03 s — is the largest margin of victory in the history of digital measurements.
There's more! See other comparisons to 12 miles per hour...