| 4/2-4/3/2021 | USMTS Spring Challenge powered by MSD | |
| USMTS Mods, USRA Stock Cars, USRA B-Mods, USRA Hobby Stocks | ||
| 4/17/2021 | Malvern Bank SLMR Super Late Models + Stock Car Challenge | |
| Malvern Bank Super Late Models, Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 4/24/2021 | Modified Madness | |
| Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 5/1/2021 | Spring Showdown Team Demo Derby | |
| 5/15/2021 | Diamond in the Rough Kid's Night + $1,000 to win Modifieds | |
| Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 5/22/2021 | Bob Flaws Memorial + Stock Car Challenge presented by Pepsi | |
| Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 6/5/2021 | 15th Annual USMTS Webster City Wrangler + Summit USRA Weekly Racing Series | |
| USMTS Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 6/12/2021 | Karl Chevrolet Fan Appreciation + Kids Night presented by Elm Street House | |
| Super Late Models powered by Jerry Goebel State Farm, Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners + Karl Chevrolet Dirt Truck Series | ||
| 6/19/2021 | Bill Rice Memorial + Malvern Bank SLMR Super Late Models | |
| Malvern Bank SLMR Super Late Models, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond In The Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 6/25-6/26/2021 | Inaugural Hawkeye 600 presented by Kwik Star | |
| Enduro race going 300 laps for $10,000 to win each night | ||
| 7/10/2021 | Stock Car Challenge presented by Seneca Foundry | |
| Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 7/17/2021 | Casey's Salute the Troops Night presented by Karl Chevrolet | |
| Super Late Models powered by Jerry Goebel State Farm, Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 7/20-7/25/2021 | Hamilton County Fair | |
| 7/31/2021 | Summit USRA Weekly Racing Series | |
| Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 8/7/2021 | Napa Auto Parts USRA Weekly Racing + Hobby Stock Special | |
| Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 8/21/2021 | P&P Electric Modified Madness | |
| Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 8/28/2021 | Karl Chevrolet Driver Appreciation Night | |
| Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods, Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners | ||
| 10/23/2021 | 20th Annual Fall Futurity | |
| Super Late Models powered by Jerry Goebel State Farm, Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods and Diamond in the Rough USRA Hobby Stocks, MyRacePass USRA Tuners (Saturday only) | ||