Career
Born in Atlanta, Georgia, McGuire ran for Tennessee State University. TSU had a very successful women"s sprinting team, The Tigerbelles, in the 1960s, including triple Olympic champions Wilma Rudolph, Wyomia Tyus, and McGuire. In 1964, she was undeafeted in her favourite event, and went to Tokyo as the main contender for the 200 m gold medal at the 1964 Summer Olympics.
McGuire first competed in the 100 m in Japan, and lost out in the final to team mate Tyus.
But in the 200 m final, she held off Poland"s Irena Kirszenstein to take the gold medal.