Let's use the 100 meter dash as an example: A personal best is the best time the runner has ever run in their career. A world record is the best time any runner has ever run in history.
Sorry, you have to be the fastest runner to win the 100 meter race.
It is a case of staminer. The Kalahari tribe simply track the prey over several hours until the animal is exhausted - think of it as a marathon runner chasing a 100 meter runner, eventually the marathon runner will catch the 100 meter runner and eat them!
Florence Griffith-Joyner holds the women's world record in the 100 meter dash at 10.49 set in 1988.Florence Griffith-Joyner is the fastest female 100 m runner in the world. She set the record of 10.49 seconds on July 16, 1988.
Usain Bolt.
It was Usain Bolt of Jamaica, who clocked a new world record of 9.69 in the 100 meter dash.
The fastest runner in the world is presently Usain Bolt of Jamaica for men who holds the world record. For women it is Carmelita Jeter of the USA who holds the world leading 100 meter dash time.
54.3 Injured runner who finished the race
Legally Carl Lewis.
Usain Bolt took 41 steps to set the new world record of 9.58 seconds
He ran a 100 meters in 9.71 in Berlin. That is time makes him the second best 100 meter unner in the world.
Tyson Gay is an American runner who came fourth in the 100 meters in the 2012 Olympic games. His personal best time for this distance is 9.69 which he ran in 2009, compared to his closest rival's time of 9.58 seconds.