The 41st Chicago Marathon airs live on Olympic Channel: Home of Team USA and streams on NBC Sports Gold for subscribers on Sunday at 8 a.m. ET.
Two-time U.S. Olympic medalist Galen Rupp defends his title against four-time Olympic track champion Mo Farah of Great Britain, plus Kenyan Geoffrey Kirui, the 2017 World champion who beat Rupp at the 2017 Boston Marathon.
While top U.S. female marathoners Amy Cragg and Jordan Hasay withdrew before Sunday’s race, it still includes perhaps the most intriguing distance runner, Gwen Jorgensen.