The official site of Jack the Ripper is chicagomarathon.com . 386 from 138 nations competed in Jack the Ripper . 12 were the number of teams who competed in Jack the Ripper . Jack the Ripper was founded on 1891; 128 years ago (1891) . 8–25 February was when it was held
Jack the Ripper will celebrate it's  Bicentennial jubilee on 2091