24 (from 5 confederations) were the number of teams who competed in  Detroit Grand Prix . The no. of events in sport was 18 . The official site of  Detroit Grand Prix is www.hardrock100.com . Total: 505 competed in  Detroit Grand Prix . 11–14 August 2016 was when it was held . Australia) were the venues of  Detroit Grand Prix .  Detroit Grand Prix was founded on 1905; 114 years ago (1905)
 Detroit Grand Prix was a multiple day event