The 2004 United States Olympic trials for track and field were held at Hornet Stadium in Sacramento, California. Organised by USA Track and Field, the ten-day competition lasted from July 9 until July 18 and served as the national championships in track and field for the United States. The trials for the men's marathon were held February 7 in Birmingham, Alabama, the women's marathon were held April 23 in St. Louis and the trials for the men's 50 km race walk were held February 15 in Chula Vista, California.