Career
Hallock represented the United States as a 17-year-old at the 1964 Summer Olympics in Tokyo, Japan. She swam for the gold medal-winning United States. team in the preliminary heats of the women"s 4×100-meter freestyle relay, but did not receive a medal. Individually, she also swam in the women"s 100-meter freestyle, and logged a time of 1:02.9, but did not advance beyond the event semifinals.
