Runners head down State Street during the Bank of America Chicago Marathon on Oct. 13, 2019.
Runners start the Bank of America Chicago Marathon on Columbus Drive on Sunday, Oct. 13, 2019.
Brigid Kosgei of Kenyan crosses the finish line and wins the Bank of America Chicago Marathon on Oct. 13, 2019.
Lawrence Cherono, of Kenyan crosses the finish line and wins the Bank of America Chicago Marathon on Sunday, Oct. 13, 2019.
Brigid Kosgei of Kenyan crosses the finish line and wins the Bank of America Chicago Marathon on Oct. 13, 2019.
Runners start the Bank of America Chicago Marathon on Columbus Drive on Sunday, Oct. 13, 2019.
Manuela Schar wins the women’s wheelchair race in the Bank of America Chicago Marathon on Oct. 13, 2019.
Daniel Romanchuk, the men’s wheelchair winner, crosses the finish line at the Bank of America Chicago Marathon on Columbus Drive on Oct. 13, 2019.
Runners react as they cross the finish line at the Bank of America Chicago Marathon on Oct. 13, 2019.
Marathoners make their way through the Pilsen neighborhood of Chicago during the Bank of America Chicago Marathon on Oct. 13, 2019.
Brigid Kosgei, left, and Lawrence Cherono celebrate after winning their Bank of America Chicago Marathon on Oct. 13, 2019.
Elite runners start the Bank of America Chicago Marathon on Oct. 13, 2019.
Marathoners make their way through the Pilsen neighborhood of Chicago during the Bank of America Chicago Marathon, Oct. 13, 2019.
Runners react as they cross the finish line in the Bank of America Chicago Marathon on Oct. 13, 2019.
Brigid Kosgei, of Kenya, left, poses with Chicago Mayor Lori Lightfoot and daughter Vivian Lightfoot after Kosgei won the Bank of America Chicago Marathon on Oct. 13, 2019.
Runners near the lead at mile marker 8 during the Bank of America Chicago Marathon on Sunday, Oct. 13, 2019.
Spectators cheer on the runners during the Bank of America Chicago Marathon, Sunday, Oct. 13, 2019.
Runners react as they cross the finish line at the Bank of America Chicago Marathon on Oct. 13, 2019.
Runners cruise down North Broadway near mile marker 8 of the Bank of America Chicago Marathon on Oct. 13, 2019, in Chicago.
Marathoners make their way down Grand Avenue near Michigan Avenue during the Bank of America Chicago Marathon, Oct. 13, 2019.
A runner celebrates her finish with the crew handing out water bottles Sunday, Oct. 13, 2019 in the Chicago Marathon.
Wheelchair marathoners start the Bank of America Chicago Marathon on Columbus Drive on Oct. 13, 2019.
A spectator holds a sign near mile marker 8 of the Bank of America Chicago Marathon on Oct. 13, 2019, in Chicago.
Matthew Zavala hands out water to runners near mile marker 8 of the Bank of America Chicago Marathon on Oct. 13, 2019, in Chicago.
Tyler Masterson cruises down North Broadway near mile marker 8 of the Bank of America Chicago Marathon on Oct. 13, 2019, in Chicago.
Runners start the race down Columbus Drive in Grant Park on Oct. 13, 2019 in the Bank of America Chicago Marathon.
Runners start the Bank of America Chicago Marathon on Columbus Drive on Sunday, Oct. 13, 2019.
Wheelchair racers start the Bank of America Chicago Marathon on Columbus Drive on Oct. 13, 2019.
Marathon participants make their way through the Pilsen neighborhood of Chicago during the Bank of America Chicago Marathon, Oct. 13, 2019.
Jennifer Edgecomb holds a sign pointing to her 15-year-old dog Floyd near mile marker 8 of the Bank of America Chicago Marathon Sunday, Oct. 13, 2019, in Chicago.
Runners cruise down North Broadway near mile marker 8 of the Bank of America Chicago Marathon on Oct. 13, 2019, in Chicago.
Drag queens cheer on runners near mile marker 8 of the Bank of America Chicago Marathon Sunday, Oct. 13, 2019, in Chicago.
Drag queens cheer on runners near mile marker 8 of the Bank of America Chicago Marathon Sunday, Oct. 13, 2019, in Chicago.
Runners start the Bank of America Chicago Marathon on Columbus Drive on Sunday, Oct. 13, 2019.
Runners cruise down North Broadway near mile marker 8 of the Bank of America Chicago Marathon on Oct. 13, 2019, in Chicago.
Spectators hold signs at the Bank of America Chicago Marathon on Oct. 13, 2019.
Chicago police officers stand along North Broadway near mile marker 8 of the Bank of America Chicago Marathon on Oct. 13, 2019, in Chicago.
Runners dressed in costumes head down State Street during the Bank of America Chicago Marathon on Oct. 13, 2019.
Runners start the Bank of America Chicago Marathon on Columbus Drive on Oct. 13, 2019.
A participant makes his way through the Chinatown neighborhood of Chicago during the Bank of America Chicago Marathon, Oct. 13, 2019.
Runners cruise down North Broadway near mile marker 8 of the Bank of America Chicago Marathon Sunday, Oct. 13, 2019, in Chicago.
Runners cruise around West Sheridan Road near mile marker 8 of the Bank of America Chicago Marathon Sunday, Oct. 13, 2019, in Chicago.
Runners head down State Street during the Bank of America Chicago Marathon on Oct. 13, 2019.
Runners start the Bank of America Chicago Marathon on Columbus Drive on Oct. 13, 2019.
A pace car drives alongside runners on North Broadway near mile marker 8 of the Bank of America Chicago Marathon on Oct. 13, 2019, in Chicago.
Runners head down State Street during the Bank of America Chicago Marathon on Oct. 13, 2019.
Marathoners gather along Michigan Avenue before the start of the race on Sunday, Oct. 13, 2019.
Marathoners prepare for the start of the Bank of America Chicago Marathon on Oct. 13, 2019.
Marathoners gather along Michigan Avenue on Oct. 13, 2019, for the Bank of America Chicago Marathon.
Chicago police patrol the course in Grant Park before the start of the Bank of America Chicago Marathon on Oct. 13, 2019.
A wheelchair athlete warms up on Oct. 13, 2019, for the Bank of America Chicago Marathon.
The starting line is prepared on Columbus Drive on Oct. 13, 2019 for the Bank of America Chicago Marathon.
Entrances are prepared along Michigan Avenue on Oct. 13, 2019, for the Bank of America Chicago Marathon.
The start line is prepared for the Bank of America Chicago Marathon on Sunday, Oct. 13, 2019.
Entrances are prepared along Michigan Avenue on Oct. 13, 2019 for the Bank of America Chicago Marathon.
