It is impossible to say for the ancient Olympics. For the modern Olympics you need to state what distance.
they ancient Olympics begun to honor their gods
running, swimming,weight lifting
Wilma Rudolph
1948
Running was a part of the first ancient Olympics in Olympia, Greece, in 776 BC. They had several different foot races in those first Olympic Games. See the Related Link.
21 running events at the morden Olympics
Running is commonly refered to as "Track" in the Olympics.
Man ran from the moment he could move.
It was on 1984
A sprint foot race.
Running. For the first few Olympics the only event was a sprint of approximately 200 metres.