 It is one of the oldest sports . In ancient times , it was an event held in conjunction with festivals and sports meets such as the Ancient Olympic Games in Greece . In modern times , the two most prestigious international track and field competitions are athletics competition at the Olympic Games and the IAAF World Championships in Athletics . The International Association of Athletics Federations is the international governing body . 
 It <a href='drop_aux' title='1'><mark>is</mark></a>one of the oldest sports . In ancient times , it was an event held in conjunction with festivals and sports meets such as the Ancient Olympic Games in Greece . In modern times , the two most prestigious international track and field competitions <a href='drop_aux' title='2'><mark>are</mark></a>athletics competition at the Olympic Games and the IAAF World Championships in Athletics . The International Association of Athletics Federations <a href='drop_aux' title='3'><mark>is</mark></a>the international governing body . 
It one of the oldest sports . In ancient times , it was an event held in conjunction with festivals and sports meets such as the Ancient Olympic Games in Greece . In modern times , the 2 most prestigious international track and field competitions athletics competition at the Olympic Games and the IAAF World Championships in Athletics . The International Association of Athletics Federations da international governing body .