A 92-year-old cancer survivor has become the oldest woman to finish a marathon. Harriette Thompson of Charlotte, North Carolina in US, completed the Marathon in San Diego in 7 hours, 24 minutes and 36 seconds. The oldest woman to previously complete a marathon was Gladys Burrill, who was 92 years and 19 days old when she completed the 2010 Honolulu Marathon. According to race organizers, Thompson is 92 years and 65 days old.