|MO FARAH||versus||USAIN BOLT|
|4||OLYMPIC GOLD MEDALS||8|
|3min 56.49s||MILE||4min 30s (estimate)|
Usain Bolt is the fastest human in the world, but only up to 200m. His huge legs, packed with fast-twitch muscle fibres, allow explosive acceleration but they can’t sustain prolonged aerobic exertion, making them dead weights over longer distances. Usain Bolt has never actually run a mile, but most experts think he’d struggle to get a time under 4min 30s.