Origin:490 B.C.,the Greek and the Persian have carried on an intense war in Greece's marathon,finally the Greek has gained the victory.For delivers very quickly the victory news capital - - Athens,sent one to call the Philippines Piji Si the soldier,has run up to Athens from the marathon.When he arrives at Athens was already exhausted,transmits the victory news later then to die.Afterward to commemorate this soldier,in 1896 at the first Olympic Games,held has run up to Athens's competition from the marathon,the winner runs the entire journey by 2 hour 58 minute 50 second time,distance was 40 kilometers 200 meters,they precisely has surveyed this section of distances in 1920,the result 42 kilometers 195 meters,later will take this distance the distance which the official marathon ran,and included all previous years Olympic Games to compete