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| 1/6/2021 | Cocopah Speedway - Somerton, AZ Cocopah Speedway 2021 Winter Nationals presented by Yuma Insurance IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brandon Holbrook (IMCA Hobby Stock) | - | - | - | - |
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| 7/17/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #14 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Brandon Holbrook (IMCA Hobby Stock) | 6th | - | 7th | - |
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| 7/21/2021 | Stuart Speedway - Stuart, IA Clint Walrod Memorial 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, IMCA Mod Lite | Results | | Brandon Holbrook (IMCA Hobby Stock) | 7th | - | - | 20th |
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| 7/24/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #15 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Brandon Holbrook (IMCA Hobby Stock) | 5th | - | - | 22nd (DNF) |
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| 9/5/2021 | Boone Speedway - Boone, IA Wild Rose Casino Prelude to the Super Nationals IMCA Northern SportMod, IMCA Hobby Stock, IMCA Sport Compact, Pro Dwarf, IMCA Mod Lite | Results | | Brandon Holbrook (IMCA Hobby Stock) | 8th | - | DNS | - |
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| 9/6/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s IMCA Late Models, IMCA Northern SportMod, IMCA Hobby Stock | Results | | Brandon Holbrook (IMCA Hobby Stock) | 9th | - | 3rd | - |
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| 9/7/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s Vintage Modifieds, Generic 1, IMCA Northern SportMod, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brandon Holbrook (IMCA Hobby Stock) | 7th | - | 4th | - |
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| 9/17/2021 | Marshalltown Speedway - Marshalltown, IA 15th Annual World Nationals IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brandon Holbrook (IMCA Hobby Stock) | 7th | - | - | 15th |
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| 9/18/2021 | Marshalltown Speedway - Marshalltown, IA 15th Annual World Nationals IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brandon Holbrook (IMCA Hobby Stock) | 6th | - | 9th (DNF) | - |
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| 10/1/2021 | Adams County Speedway - Corning, IA 23rd Annual NAPA "Tradition" Kevin Sharp Memorial--Custom Diesel Drivers Training "Pink Out" Night Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Brandon Holbrook (Hobby Stocks) | 8th | - | 7th | - |
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| 10/2/2021 | Adams County Speedway - Corning, IA 23rd Annual NAPA Auto Parts "Tradition" Night # 2 Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Brandon Holbrook (Hobby Stocks) | 8th | - | 10th | - |
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