There is not an age limit for participating in the Olympics. However, each International Sports Federation establishes its own rules for its particular sport, and age restrictions may be present in these rules.
Besides hard work, dedication and training, an athlete must comply and agree with the Olympic Charter to enter the Olympic games. The Olympic Charter is essentially the constitution of the Olympics. It defines rules and regulations associated with the Olympic games. The athlete must also comply with all the regulations of the International Sports Federation that oversees her sport. The International Sports Federation is responsible for establishing rules and organizing specific events.