Izzi Batt-Doyle smashes Australian marathon record with 2:20:38 run in Chicago:

Izzi Batt-Doyle smashes Australian marathon record with 2:20:38 run in Chicago: Another Australian athletics record falls, with Olympian Batt-Doyle taking more than two minutes off her personal best to break the women’s marathon mark in Chicago. #IzziBattDoyle #MarathonRecord #AustralianAthletics #ChicagoMarathon #Running