The men's 1956 United States Olympic Trials for track and field for men were held at the Los Angeles Memorial Coliseum in Los Angeles, California, between June 28-9. The 20 kilometer walk trials were held in Pittsburgh, Pennsylvania, on August 26, and the 50 kilometer walk trials were held on September 16 in Baltimore, Maryland. Two marathon trials were held between two races, the AAU National Championships in Yonkers, New York, on September 30 and the Boston Marathon in Boston, Massachusetts, on April 19. As it turned out, the three selectees were the top 3 Americans at both events. The 10,000 meters was held in Bakersfield, California on June 23.