Triathlete, Jane Kelly-Langford, begins the final portion of the triathlon aboard Marine Corps Base Quantico on Aug, 18, 2013. This lady was the first female to complete the event which included a 400-meter swim, nine-mile bicycle race and five-kilometer run. - Triathlete, Jane Kelly-Langford, begins the final portion of the triathlon aboard Marine Corps Base Quantico on Aug, 18, 2013. This lady was the first female to complete the event which included a 400-meter swim, nine-mile bicycle race and five-kilometer run.