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| 4/24/2021 | Shelby County Speedway - Harlan, IA Spring Fling Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact, IMCA Mod Lite | Results | | Adam Tiernan (Hobby Stocks) | DNS | - | - | 6th |
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| 4/30/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Sprint Cars 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Adam Tiernan (Hobby Stocks) | 4th | - | - | 9th (DNF) |
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| 5/1/2021 | Shelby County Speedway - Harlan, IA May Day Mayhem Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact | Results | | Adam Tiernan (Hobby Stocks) | 5th | - | - | 7th |
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| 5/7/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Modified 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Adam Tiernan (Hobby Stocks) | 5th | - | - | 6th |
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| 5/15/2021 | Shelby County Speedway - Harlan, IA Pizza Ranch presents The James Buwalda Memorial w/ Kids Candy Dash Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Vintage Full Body Stock Cars, Sport Compact | Results | | Adam Tiernan (Hobby Stocks) | DNS | - | - | 10th |
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| 5/21/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Sport Mods and Stocks Cars with draw/redraw for these classes 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Adam Tiernan (Hobby Stocks) | 3rd | - | - | 6th |
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| 5/22/2021 | Shelby County Speedway - Harlan, IA Coca-Cola night Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact | Results | | Adam Tiernan (Hobby Stocks) | 3rd | - | - | 13th (DNF) |
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| 5/28/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$600 to win Hobby Stock and $400 to win Sport Compact 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets, Sport Compact | Results | | Adam Tiernan (Hobby Stocks) | 7th | - | - | 21st (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 | | Adam Tiernan (IMCA Hobby Stock) | 8th (DNF) | - | 11th | - |
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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 | | Adam Tiernan (IMCA Hobby Stock) | 5th | - | 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 | | Adam Tiernan (IMCA Hobby Stock) | 6th | - | 8th | - |
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