For 12 years, the Iowa Corn 300 provided Iowa Corn with a venue to promote the power and performance of ethanol at speeds over 200 miles per hour. The race was sponsored by the Iowa Corn Growers Association (ICGA) and the Iowa Corn Promotion Board (ICPB) generating awareness of ethanol and allowing consumers to learn the benefits of supporting the ethanol industry while giving them the opportunity to see the homegrown fuel in action.
The partnership between Iowa Corn, INDYCAR and Iowa Speedway began at the first race in 2007 and was the second-longest entitlement sponsorship in INDYCAR racing. From 2007-2013, the race was a 250 -lap race. Beginning in 2014, the race was increased to 300 laps. The alliance allowed for a wide array of topics to be addressed on a local, national and international stage through INDYCAR racing events at the Iowa Speedway.
The Iowa Corn 300 boasted an impressive number of followers with more than 3 million television viewers and over 4 billion digital impressions. The final Iowa Corn 300 took place in 2018.