Iowa and Michigan have not met since at least the 2017 season.
Right now Iowa is 33–23 and Michigan is 34–24, with Iowa at 153 days since a win against Michigan's 151.
Full schedules and drought counters: Iowa Hawkeyes and Michigan Wolverines.
Iowa vs Illinois, Iowa vs Indiana, Iowa vs Maryland, Iowa vs Michigan State, Iowa vs Minnesota, Iowa vs Nebraska, Iowa vs Northwestern, Iowa vs Ohio State, Iowa vs Oregon, Iowa vs Penn State, Iowa vs Purdue, Iowa vs Rutgers, Iowa vs UCLA, Iowa vs USC, Iowa vs Washington.
Michigan vs Illinois, Michigan vs Indiana, Michigan vs Maryland, Michigan vs Michigan State, Michigan vs Minnesota, Michigan vs Nebraska, Michigan vs Northwestern, Michigan vs Ohio State, Michigan vs Oregon, Michigan vs Penn State, Michigan vs Purdue, Michigan vs Rutgers, Michigan vs UCLA, Michigan vs USC, Michigan vs Washington.