The no. of events in sport was 12 . 40 from 30 nations were the competitors in  Detroit Grand Prix . The sport has the official site chicagomarathon.com .  Société Athlétique de la Villa Primrose in Bordeaux (1909) were the venues of  Detroit Grand Prix . It was held in 6–20 August 2016 . 17 teams competed in  Detroit Grand Prix
 Detroit Grand Prix was held in  Société Athlétique de la Villa Primrose in Bordeaux (1909)