The no. of events in sport was 8 . 11 August – 28 August was when it was held . The official site of US Open is chicagomarathon.com . 1884; 135 years ago (1884) is when US Open was established  . Pontal, Rio de Janeiro,54.5 km (33.9 mi) were the venues of US Open
More than 6 events were held in US Open