of national dominance in distance running events, particularly the 3000 meters steeplechase in subsequent Olympics. Background This was the 15th appearance of the event, which is one of 12 athletics events to have been held at every Summer Olympics. Three finalists from 1960 returned: gold medalist Peter Snell of New Zealand, bronze medalist George Kerr of Jamaica, and sixth-place finisher Manfred Matuschewski of the United Team of Germany. Snell had broken the 800 metres world record as well as the one-mile world record, and was a favorite to repeat. Chad, Colombia, Hong Kong, Iran, Malaysia, Mongolia, and Tanzania appeared in the event for the first time. Great Britain and the United States each made their 14th appearance, tied for the most among all nations. Competition format After one Games of a four-round format in 1960, the competition returned to the three-round format used in most Games since 1912 (other than 1960, the only other deviation was in 1936 when there were only two rounds due to a small number of entrants). The final, which had been 9 men from 1920 to 1952, 8 in 1956, and only 6 in 1960, was back up to 8 men. The 1964 competition introduced the "fastest loser" system, used only in the semifinals at this edition. Previously, advancement depended solely on the runners' place in their heat. The 1964 competition added advancement places to the fastest runners across the heats in the semifinals who did not advance based on place. There were six first-round heats, each with 7 or 8 athletes; the top four runners in each heat advanced to the semifinals. There were three semifinals with 8 athletes each; the top two runners in each semifinal, and the next two fastest overall, advanced to the eight-man final. Records These were the standing world and Olympic records (in minutes) prior to the 1948 Summer Olympics. In the second semifinal, George Kerr and Wilson Kiprugut each finished at 1:46.1 to set a new, though short-lived, Olympic record. The final saw four runners break that new record, with Peter Snell's gold-medal winning 1:45.1 the new record afterward. Schedule All times are Japan Standard Time (UTC+9) Results First round The top four runners in each of the 6 heats advanced. Heat 1 Heat 2 Heat 3 Heat 4 Heat 5 Heat 6 Semifinals The top two runners in each of the three semifinals qualified for the final,