The sport has the official site chicagomarathon.com . The venue for US Open was Galatsi Olympic Hall (rhythmic),Pauley Pavilion,New York City, New York,,United States . 1871; 148 years ago (1871) is when US Open was founded  . 116 from 13 nations competed in US Open . 24 (from 5 confederations) teams participated in US Open . It was held in 7–19 February
US Open will celebrate it's  Bicentennial jubilee on 2071