United States Olympic Trials (track and field) fill out the field. Since 1972 there have been a minimum of 24 entries in any event, with the popular sprint events 100 meters, 200 meters, 400 meters and 110 meter hurdles having a minimum of 32 entries. Since 1992, athletes achieving the "A" standard are funded to attend the Olympic Trials, while "B" standard athletes have to pay their own way to the meet. Unlike many other countries, who have a selection committee, the selection to the United States Olympic Team is exclusively by results on the track. It's "do or die" in the prescribed event. If two or
3000 metres outdoor championships, but is occasionally hosted at annual elite track and field meetings. It is often featured in indoor track and field programmes and is the longest distance event present at the IAAF World Indoor Championships. In women's athletics, 3000 metres was a standard event in the Olympic Games (1984 to 1992) and World Championships (1980 to 1993). The event was discontinued at World Championship and Olympic level after the 1993 World Championships in Athletics – Qu Yunxia being the final gold medal winner at the event. Starting with the 1995 World Championships in Athletics and the 1996 Olympic Games,