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| 5/15/2021 | Maquoketa Speedway - Maquoketa, IA Weekly Racing $750 to win IMCA Stock Cars Pro Legends, Vintage Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Greyson Markhardt (Pro Legends) | 7th | - | - | 13th |
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| 7/3/2021 | Maquoketa Speedway - Maquoketa, IA Weekly Racing w/ Bus Races Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Greyson Markhardt (Pro Legends) | 5th | - | - | 12th |
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| 8/1/2021 | Dubuque Fairgrounds Speedway - Dubuque, IA Julien Dubuque Classic Fair Race Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, IMCA Late Models, Sport Compact, Dirt Mini Late Models | Results | | Greyson Markhardt (Hobby Stocks) | 6th | - | - | 13th |
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| 8/6/2021 | Lafayette County Speedway - Darlington, WI Season Championship! Open, Economy Late Models, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Hobby Stock | Results | | Greyson Markhardt (IMCA Hobby Stock) | 8th | - | - | 6th |
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| 8/18/2021 | Lafayette County Speedway - Darlington, WI Grant County Fair Race Vintage Full Body Stock Cars, Economy Late Models, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Hobby Stock | Results | | Greyson Markhardt (IMCA Hobby Stock) | 3rd | - | - | 13th |
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| 8/22/2021 | Dubuque Fairgrounds Speedway - Dubuque, IA The Dubuque Advertiser Weekly Racing Hobby Stocks, A Modifieds, B Modifieds, Economy Late Models, IMCA Late Models, Dirt Mini Late Models | Results | | Greyson Markhardt (Hobby Stocks) | 2nd | - | - | 6th |
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| 8/29/2021 | Dubuque Fairgrounds Speedway - Dubuque, IA McDermott Excavating Season Championship Night Hobby Stocks, A Modifieds, B Modifieds, Masters Legends, IMCA Late Models, Sport Compact | Results | | Greyson Markhardt (Hobby Stocks) | 5th | - | - | 11th |
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| 9/17/2021 | Lafayette County Speedway - Darlington, WI Bob Larson Memorial, Night 1 Open, Vintage Full Body Stock Cars, Economy Late Models, IMCA Hobby Stock | Results | | Greyson Markhardt (IMCA Hobby Stock) | 6th | - | - | 6th |
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| 10/15/2021 | Dubuque Fairgrounds Speedway - Dubuque, IA Iowa Dirt Nationals Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Semi-Pro Legends, Sport Compact, IMCA Modified | Results | | Greyson Markhardt (Hobby Stocks) | 5th | - | DNS | - |
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