Athletics at the 1952 Summer Olympics – Men's 800 metres

Starting from a waterfall start, most competitors were allowed to and chose to use a crouch start. Returning silver medalist Arthur Wint sprinted to the lead with Heinz Ulzheimer moving into a tight marking position with Gunnar Nielsen and Günther Steines sprinting to keep up. On the home stretch for the first time, defending champion Mal Whitfield moved forward, past the other chasers into a marking position on Ulzheimer. Wint continued to lead down the backstretch, then Whitfield accelerated past Ulzheimer, who turned to look, then at the beginning of the turn, Wint. It was a deja vu for Wint, seeing Whitfield ahead of him on the final turn of the Olympics. The first five were separated from the rest of the pack, Whitfield pulling away to defend his championship. Wint couldn't make any progress on Whitfield but held off the battle behind him. Steines lost ground, getting passed by a big rush by Albert Webster, but Nielsen pressed Ulzheimer to the line, Ulzheimer taking bronze with a lean then in the next step doing a face plant to the track.

Whitfield equalled the Olympic record he had set in London four years earlier, meaning he ran exactly the same time 1:49.2 in both races. Wint was a tenth of a second faster. Whitfield became the second man after Douglas Lowe to defend the 800 metres title. Peter Snell and David Rudisha have since equalled the feat.

This was the 12th appearance of the event, which is one of 12 athletics events to have been held at every Summer Olympics. Only two of the finalists from the 1948 Games returned, but they were the top two: gold medalist Mal Whitfield of the United States and silver medalist Arthur Wint of Jamaica.[1]

Cuba, Ghana, Guatemala, Israel, Pakistan, Puerto Rico, the Soviet Union, Thailand, and Venezuela appeared in the event for the first time. Great Britain and the United States each made their 11th appearance, tied for the most among all nations.

The event used the three-round format introduced in 1912. There were eight first-round heats, each with between 5 and 7 athletes; the top three runners in each heat advanced to the semifinals. There were three semifinals with 8 athletes each; the top three runners in each semifinal advanced to the nine-man final.[1][3]

These were the standing world and Olympic records (in minutes) prior to the 1948 Summer Olympics.

World record	Rudolf Harbig (GER)	1:46.6	Milan, Italy	15 July 1939
Olympic record	Mal Whitfield (USA)	1:49.2	London, United Kingdom	2 August 1948

Mal Whitfield repeated his own Olympic record with a time of 1:49.2 in the final.

All times are Eastern European Summer Time (UTC+3)