Terrance Stanley Fox (1958 – 1981) was a Canadian athlete, humanitarian, and cancer research activist. In 1980, with one leg having been amputated due to cancer, he embarked on an east to west cross-Canada run to raise money and awareness for cancer research. Although the spread of his cancer eventually forced him to end his quest after 143 days and 5,373 kilometres (3,339 mi), and ultimately cost him his life, his efforts resulted in a lasting, worldwide legacy.