An American man won the New York City Marathon this weekend for the first time in 27 years. Meb Keflezighi won by 41 seconds with a personal best time of 2:09:15. He was born in Africa and became an American citizen in 1998.

All 44,000 runners in the race can feel justifiably proud of their accomplishment, but there's evidence that, to our ancestors, a 26.2-mile run was no big deal.

As Jeremy Hubbard reports, when it comes to running, humans may be the king of beasts.