1911 Illinois Cup (301-450ci Class) is 51st AAA National Motor Car Championship race. Passed at the Elgin circuit. Don Herr won the pole position and this race. This was his 1st victory. Charles Merz and Rupert Jeffkins also climbed to the podium, in second and third place. Race distance 24 laps (327 km).
National 40 - 1911 Illinois Cup (301-450ci Class) winner