45,000 runners participate in Chicago Marathon
["north america"]
The Chicago Marathon 2017 on Sunday attracted a total of 45,000 contestants from over 100 countries all over the world to participate in. 
Upon the starting gunshot of the referee, the runners started their 42.195-kilometer race through the city and surrounding suburbs. 
Galen Rupp took the trophy home becoming the first American to win the marathon in over a decade, finishing in 2 hours, 9 minutes and 20 seconds.
As one of the six World Marathon Majors, it attracted many top runners from all over the world, including many professionals from Africa. But many of the participants are marathon lovers. 
In addition to professional group and amateur runners, the Marathon also set up a wheelchair division for those with disabilities this time.
Marcel Hug won the wheelchair race for the second year in a row. 
More than 1,600 Chinese runners participated in the marathon, the highest number ever since the event started.