A little more than two hours from the starting gun, the race had its champion: Kenya's Dickson Chumba, with a time of 2:09:25. The women's winner, also hailing from Kenya, was Florence Kiplagat, who crossed the finish line at 2:23:33, just 10 seconds faster than the second place woman, Ethiopian Yebrgual Melese. Birhane Dibaba, also from Ethiopia, ran a 2:24:24, coming in third.
Kenyans Sammy Kitwara and Sammy Ndungu finished second and third, respectively, in the men's race with times of 2:09:25 and 2:09:50.
Three-time Olympian Deena Kastor finished as the seventh overall female and top American, breaking the U.S. master's record by running a 2:27:47. The previous record was 2:28:40, set in 2005 by Colleen DeReuck.
The wheelchair division also saw broken records, as Tatyana McFadden set a new course record of 1:41:10. The time earned her a fifth straight title and her sixth win overall at the Chicago Marathon since her 2009 race debut.
The men's wheelchair race saw the top 11 competitors cross the finish line within 13 seconds of each other. With a time of 1:30:46, Australian Kurt Fearnley took home his fifth race title. A second place photo finish led to Marcel Hug barely edging out 2014 winner Joshua George after they both clocked a time of 1:30:48.
The Chicago Marathon also served as the 2016 U.S. Paralympic Trials, with the top two male and female finishers qualifying for the 2016 Paralympic Games in Rio.
Check out the gallery below for race day photos from the 2015 Bank of America Chicago Marathon.
All images courtesy of Bank of America Chicago Marathon.
And They're Off1 of 13
The start of the 2015 Bank of America Chicago Marathon.
Men's Field2 of 13
The men off to a quick start.
Men's Wheelchair Field3 of 13
The male wheelchair race ended in dramatic fashion, with 11 of the top competitors finishing within 13 seconds of each other.
Female Leaders4 of 13
The ladies not cutting each other any slack.
Male Leaders5 of 13
The men looking strong.
37,000 of Your Closest Friends6 of 13
The Chicago Marathon is one of the largest 26.2-milers in the world.
Deena Kastor7 of 13
The fastest American, Kastor finished as the seventh female and broke the U.S. master's marathon record with a time of 2:27:47.
Luke Puskedra8 of 13
Puskedra finished as the top American male, coming in fifth with a PR time of 2:10:24.
Tatyana McFadden9 of 13
Female wheelchair winner McFadden set the new course record with a time of 1:41:10.
Male Winner10 of 13
Kenyan Dickson Chumba took the men's title with a time of 2:09:25.
Female Winner11 of 13
With a time of 2:23:33, Florence Kiplagat of Kenya took home the win for the women.
Smiles All Around12 of 13
The male and female winners snap a happy shot with Chicago Marathon race director Carey Pinkowski.