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| 3/20/2021 | Bristol Motor Speedway - Bristol, TN Bristol Dirt Nationals Dirt Super Late Models: XR Workin' Man Series DIRTcar UMP Modifieds, Stock Cars, A Modifieds, Hornets, IMCA Sport Compact, 604 Crate Late Models | Results | | Shannon Mahlberg (Hornets) | 4th | - | 10th | - |
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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 | | Shannon Mahlberg (Sport Compact) | 1st | - | - | 1st |
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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 | | Shannon Mahlberg (Hornets) | 1st | - | - | 1st |
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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 | | Shannon Mahlberg (Sport Compact) | 1st | - | - | 1st |
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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 | | Shannon Mahlberg (Hornets) | 1st | - | - | 2nd |
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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 | | Shannon Mahlberg (Sport Compact) | 4th | - | - | 2nd |
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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 | | Shannon Mahlberg (Hornets) | 3rd | - | - | 7th |
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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 | | Shannon Mahlberg (Sport Compact) | 3rd | - | - | 6th |
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| 6/12/2021 | Worthington Speedway - Worthington, MN Regular Night Hobby Stocks, Stock Cars, Sportsmans, A Modifieds, B Modifieds, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Shannon Mahlberg (Sport Compact) | 8th | - | - | 8th |
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| 6/19/2021 | Shelby County Speedway - Harlan, IA The BuckSnort presents Father's Day Fleet Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Vintage Full Body Stock Cars, Sport Compact | Results | | Shannon Mahlberg (Sport Compact) | 1st | - | - | 2nd |
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| 6/27/2021 | Interstate Speedway (SD) - Jefferson, SD IMCA Weekly Series IMCA Modified: Midwest Madness Tour IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Shannon Mahlberg (Sport Compact) | - | - | - | - | | Shannon Mahlberg (IMCA Sport Compact) | 7th | - | - | DNS |
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| 6/28/2021 | Park Jefferson International Speedway - Jefferson, SD Midwest Madness Tour at Park Jefferson IMCA Modified: Midwest Madness Tour IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Rain Out |
| 6/30/2021 | Buena Vista Raceway - Alta, IA Midwest Madness Tour/Kyle Suter Memorial Race IMCA Modified: Midwest Madness Tour Hobby Stocks, Stock Cars, B Modifieds, Sport Compact, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Shannon Mahlberg (Sport Compact) | - | - | - | - | | Shannon Mahlberg (IMCA Sport Compact) | - | - | - | - |
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| 7/2/2021 | 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 | Results | | Shannon Mahlberg (Hornets) | 2nd | - | - | 1st |
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| 7/16/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-$1000 to win Sport Mods 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Shannon Mahlberg (Hornets) | 1st | - | - | 7th |
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| 7/17/2021 | Shelby County Speedway - Harlan, IA Shelby County Fair Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Vintage Full Body Stock Cars, Sport Compact | Results | | Shannon Mahlberg (Sport Compact) | 3rd | - | - | 1st |
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| 7/23/2021 | Crawford County Speedway - Denison, IA Regular Night All Classes-Fair Night 305 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Hornets | Results | | Shannon Mahlberg (Hornets) | 1st | - | - | 4th |
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| 8/6/2021 | 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 | Results | | Shannon Mahlberg (Hornets) | 3rd | - | - | 9th (DNF) |
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| 8/9/2021 | Park Jefferson International Speedway - Jefferson, SD J&J Fitting Iron Cup Night 1 B Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Shannon Mahlberg (IMCA Sport Compact) | 7th | - | - | 8th (DNF) |
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| 8/13/2021 | 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 | Results | | Shannon Mahlberg (Hornets) | 3rd | - | - | 7th |
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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 | | Shannon Mahlberg (IMCA Sport Compact) | 2nd | - | - | 9th |
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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 | | Shannon Mahlberg (IMCA Sport Compact) | 2nd | - | - | 29th (DNF) |
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| 9/24/2021 | Shelby County Speedway - Harlan, IA Tiny Lund Night 1 / Battle of the Compacts on Hwy 59 Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models, Sport Compact | Results | | Shannon Mahlberg (Sport Compact) | 3rd | - | - | 1st |
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| 9/25/2021 | Shelby County Speedway - Harlan, IA Tiny Lund Night 2 / Dirt Truck Racing Assoc. Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Shannon Mahlberg (Sport Compact) | 3rd | - | - | 1st |
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