12 were the number of teams who competed in  Detroit Grand Prix . The official site of  Detroit Grand Prix is www.hardrock100.com . The venue for  Detroit Grand Prix was Riocentro – Pavilion 6 . August 19, 2017  – August 23, 2017  (artistic) was when it was held . The no. of events in sport was 18
There were more than 8 events in  Detroit Grand Prix