The post time for Kentucky Derby 138 is 6:24 p.m. EDT on May 5. NBC's network coverage from Churchill Downs is 5-7 p.m. The Kentucky Derby is the 11th of 13 races on Saturday. Post time for the first one is 10:30 a.m.; the last one is set to start at 7:50 p.m.
You can stream—and wager—on all the races at TwinSpires.com. 
Photo: Courtesy Kentucky Derby