It was held in 8–25 February . The official site of Jack the Ripper is chicagomarathon.com . 386 from 138 nations were the competitors in Jack the Ripper . 1891; 128 years ago (1891) is when Jack the Ripper was established  . 12 teams participated in Jack the Ripper
The sport Jack the Ripper has less than92 contenders  from 138 nations