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Born in Semarang in the former Dutch East Indies on 4 March 1922, Stad-de Jong's greatest success came at the 1948 Summer Olympics in London when she won the gold medal as the first runner in the 4x100m Relay, teaming with Netty Witziers-Timmer, Gerda van der Kade-Koudijs and IAAF Hall of Fame member Fanny Blankers-Koen.
Stad-de Jong also competed in the 100m and reached the semi-finals.
In 1950, she won another medal with the Dutch relay team when they finished second at the 1950 European Championships.
with thanks to Wim van Hemert