The fastest is around a 2.5 home to 1st time
The fastest running bird is the Ostrich.
he was the fastest, running a 4.2 forty yard dash.
The fastest running land animal is the Cheetah.
About a sixteenth of a second, or 0.0625 seconds.
The fastest time to finish a mile is 4 minutes
There is no senior record for running
22:04 by Alberto Salazar