The Prefontaine Classic, an Oregon Track Club event, is one of the premier track and field meets in the United States, held in Eugene, Oregon. Every year it draws a world caliber field to compete at Hayward Field on the campus of the University of Oregon. Previously one of the IAAF Grand Prix events, it is now part of the Diamond League. The meet is one of the few international competitions to host the imperial distances of the Mile run and 2 Mile run.
Japan competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Australia competed at the 2011 World Championships in Athletics from 27 August to 4 September in Daegu, South Korea.
Germany competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Brazil competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Spain competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Cuba competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Finland competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Nigeria competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Colombia competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
The Cayman Islands competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea. One athlete, 110m hurdler Ronald Forbes, represented the country in the event.
Saint Vincent and the Grenadines competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
The Marshall Islands did not compete at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Kuwait competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea. One athlete was announced to represent the country in the event. Another athlete, hammer thrower Ali Mohamed Al-Zinkawi appeared on the official start list.
Myanmar competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Chinese Taipei competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Guam competed at the 2015 World Championships in Athletics in Beijing, China, from 22–30 August 2015.
Regine Tugade-Watson is a Guamanian sprinter. She competed in the women's 100 metres event at the 2015 World Championships in Athletics in Beijing, China, as well as the girl's 200 m event at the 2015 World Youth Championships in Cali, Colombia. She competed in the women's 100 m preliminary round of the 2016 Summer Olympics. Tugade finished third place in her heat but did not progress further. She also competed in her second World Championships in 2017, competing in the 200 m. She holds seven Guamanian national records in athletics. In July 2021 she was a flag bearer in the Parade of Nations at the Tokyo Olympics opening ceremony.
Guam competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from August 5 to 21, 2016. This was the territory's eighth consecutive appearance at the Summer Olympics.
Guam competed at the 2017 World Championships in Athletics in London, United Kingdom, from 4–13 August 2017.
