But for my school, I was sprinting from quite a young age, as soon as I could make it into the team.
Coming from a sprinting background I'd have to say Usain I think, but the thing is the speeds that Mo and everyone else run at those distances is so fast as well, I think it's sort of unfathomable for someone like myself.
Clancy, 59, took over as acting head of the agency in October when his predecessor, Julia Pierson, resigned after agents allowed several embarrassing breaches, including failing to stop a man with a knife from climbing the White House fence, sprinting across the lawn and then running 80ft into the president's home.
"There's an incredible calibre of female athletes, especially in sprinting.
He can get back to doing what he does best - sprinting, obviously.
Stand up in the pedals for the first 15 of those sprinting seconds; drop back into the saddle for the second 15.
Kargbo encouraged him to study hard so that he could become a doctor or a lawyer but sprinting was always his first love and eventually she agreed to let him follow his heart.
If he returns to Sierra Leone, where Ebola has wreaked havoc, he will have little opportunity to continue his sprinting.
If he returns to Sierra Leone he is not expected to receive any training as he has become a "young adult orphan" and because of the Ebola crisis there is great uncertainty about whether or not he will be able to continue his sprinting career.
Sadly (for potentially-amused bystanders) this doesn't involve sprinting along the road in terror as a whirring hunk of metal zips towards your head like a modern, budget remake of North by Northwest.
As the final whistle went Barcelona's players gathered in a circle, substitutes and squad players sprinting to join them, and danced while Gerard Piqué began spraying the Catalan cava.
