You never know. Practice makes it possible.
My brother is 45 years old and he is a Marathon runner. He is going to Athens tomorrow to join the 2500th anniversary Marathon this Sunday (Oct 31). He usually finishes a Marathon run within 5 hours (in Tokyo, Hong Kong, Singapore, etc.).
2010 is the 2500th anniversary of the battle of Marathon in 490 BC and the legendary run by Pheidippides from the Marathon Battlefield to the city of Athens. |