23 October 1968
Kipchego “Kip” Keino was born in Kipsano, Kenya on 17 January 1940. Keino began his international running career in 1962. From early on he trained under very high altitudes to prepare his body to perform under all conditions. Keino won several gold medals between 1962 and 1972, but it was his gold medal win and setting of a new record in the 1968 Olympics in Mexico that catapulted him into stardom.
References

 Athletics-heroes.net "Kip Keino",From:Athletics-heroes.ne,[online]. Available at www.sporting-heroes.net  [Accessed 22 September 2011]