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| 4/17/2021 | Independence Motor Speedway - Independence, IA Sport Mods & Stock Cars $750 to Win DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | DNS | - | - | 11th |
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| 4/24/2021 | Independence Motor Speedway - Independence, IA Weekly racing DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 6th | - | - | 10th |
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| 5/9/2021 | Benton County Speedway - Vinton, IA Weekly IMCA Racing Plus Micro Sprints Winged Outlaw, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Carl Reninger (IMCA Northern SportMod) | 7th | - | - | 20th |
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| 5/15/2021 | Independence Motor Speedway - Independence, IA Albert Auto Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 4th | - | - | 11th |
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| 5/21/2021 | 300 Raceway - Farley, IA Truck Country 50 Dirt Super Late Models: Lucas Oil Late Model Dirt Series A Modifieds, B Modifieds, CRUSA Dirt Late Models, IMCA Modified | Results | | Carl Reninger (B Modifieds) | 9th | - | - | 15th |
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| 5/22/2021 | Independence Motor Speedway - Independence, IA Myers Polaris Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 8th | - | - | 14th |
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| 6/5/2021 | Independence Motor Speedway - Independence, IA Fahr Beverage Mid Season DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 7th | - | - | 11th |
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| 6/9/2021 | 300 Raceway - Farley, IA Cobra Lanes Weekly Racing In Memory of Randy Mackey Stock Cars, A Modifieds, B Modifieds, IMCA Late Models | Rain Out |
| 6/12/2021 | Independence Motor Speedway - Independence, IA Burco Farms Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 3rd | - | - | 10th |
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| 6/19/2021 | Independence Motor Speedway - Independence, IA Crawford Farms Hall of Fame Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 5th | - | - | 9th |
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| 7/2/2021 | 300 Raceway - Farley, IA 2nd Annual Event Dirt Super Late Models: Lucas Oil MLRA Stock Cars, A Modifieds, B Modifieds | Results | | Carl Reninger (B Modifieds) | 6th | - | - | 10th |
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| 7/11/2021 | Benton County Speedway - Vinton, IA Urbana 5 - Weekly IMCA Racing Plus Legends Cars Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Carl Reninger (IMCA Northern SportMod) | 9th | - | 16th | - |
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| 7/17/2021 | Independence Motor Speedway - Independence, IA West Edge Auto Iowa Donor Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 5th | - | - | 10th |
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| 7/24/2021 | Independence Motor Speedway - Independence, IA Iowa Donor Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 5th | - | - | 15th |
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| 7/31/2021 | Independence Motor Speedway - Independence, IA Weekly Racing DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 4th | - | - | 11th |
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| 8/14/2021 | Independence Motor Speedway - Independence, IA Weekly Racing DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 7th (DNF) | - | - | 8th |
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| 8/21/2021 | Independence Motor Speedway - Independence, IA Weekly Racing DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Carl Reninger (B Modifieds) | 5th | - | - | 14th |
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| 9/1/2021 | 300 Raceway - Farley, IA Victory Ford Season Championship Night Stock Cars, A Modifieds, B Modifieds, IMCA Late Models | Results | | Carl Reninger (B Modifieds) | 4th | - | - | 9th |
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| 9/23/2021 | Dubuque Fairgrounds Speedway - Dubuque, IA Dubuque Speedway - EAST Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, A Modifieds, B Modifieds, Vintage Full Body Stock Cars, Vintage Modifieds | Results | | Carl Reninger (B Modifieds) | 8th | - | - | 15th |
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| 10/14/2021 | Dubuque Fairgrounds Speedway - Dubuque, IA Iowa Dirt Nationals Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, IMCA Late Models, IMCA Modified | Results | | Carl Reninger (B Modifieds) | 5th | - | - | 18th |
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