60 from 34 nations were the competitors in Australian Open . First/Second Sunday in October (before Columbus Day) was when it was held . The sport has the official site chicagomarathon.com . 24 (from 5 confederations) were the number of teams who competed in Australian Open . The no. of events in sport was 8 . Australia) were the venues of Australian Open . Australian Open was established on 2005
67 contenders from 37 nations