The men's Olympic discus weighs 4.4 pounds and is 8.66 inches in diameter. The women's discus is half the weight of the men's discus at 2.2 pounds, but it is still 7 inches in diameter. High school and college boys use a discus between 3.3 and 3.9 pounds.
The discus throw is among the most ancient of the Olympic sports. Its earliest appearance dates back to 708 B.C. The sport was included when the games were reintroduced in 1896. The men's discus size was formalized in 1907, and the women's event was created in 1928. Modern participants now throw from a 2.73-yard concrete pad.