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| 1/2/2021 | Tulsa Expo Raceway - Tulsa, OK Driller Time! Winged Outlaw, Non-Wing Outlaw, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, Junior Sprints, 600cc Modifieds | Results | | Dave Rosburg (600cc Modifieds) | - | - | 8th | - |
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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 | | Dave Rosburg (Stock Non-Wing) | 10th | - | - | 7th |
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| 4/23/2021 | Fayette County Speedway - West Union, IA Weekly Points Race 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 6th | - | - | 7th |
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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 | | Dave Rosburg (Stock Non-Wing) | 2nd | - | - | 4th |
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| 4/30/2021 | Fayette County Speedway - West Union, IA Weekly Points Race 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 6th | - | - | 5th |
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| 5/1/2021 | Independence Motor Speedway - Independence, IA Caseys Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Dave Rosburg (Stock Non-Wing) | DNS | - | - | 6th |
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| 5/7/2021 | Fayette County Speedway - West Union, IA Weekly Points Race ~ Tuner Special 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 5th | - | - | 8th |
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| 5/14/2021 | Fayette County Speedway - West Union, IA Weekly Points Race 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 3rd | - | - | 4th |
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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 | | Dave Rosburg (Stock Non-Wing) | 3rd | - | - | 4th |
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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 | | Dave Rosburg (Stock Non-Wing) | 4th | - | - | 4th |
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| 6/4/2021 | Fayette County Speedway - West Union, IA Weekly Points Race - Sponsored by Pioneer & United Beverage 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 4th (DNF) | - | - | 7th |
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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 | | Dave Rosburg (Stock Non-Wing) | 5th | - | - | 4th |
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| 6/11/2021 | Fayette County Speedway - West Union, IA Weekly Points Race ~ Sponsored by Alpha Tap ~ $1000 to win BMods 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 5th | - | - | 5th |
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| 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 | | Dave Rosburg (Stock Non-Wing) | 4th | - | - | DNS |
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| 6/18/2021 | Fayette County Speedway - West Union, IA Weekly Points Race 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 3rd | - | - | 6th |
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| 7/13/2021 | Winneshiek Raceway - Decorah, IA Winneshiek County Fair Race USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Mod Lites | Results | | Dave Rosburg (Mod Lites) | 3rd | - | - | 4th |
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| 7/23/2021 | Cresco Speedway - Cresco, IA Friday Night Races at Cresco Speedway 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 2nd | - | - | 4th (DNF) |
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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 | | Dave Rosburg (Stock Non-Wing) | 6th | - | - | 3rd |
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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 | | Dave Rosburg (Stock Non-Wing) | 1st | - | - | 5th |
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| 8/6/2021 | Fayette County Speedway - West Union, IA Weekly Points Race ~ Iowa Donor Network Race 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 1st | - | - | 5th |
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| 8/7/2021 | Winneshiek Raceway - Decorah, IA Upper Iowa Speedway - Weekly Points Race USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Mod Lites | Results | | Dave Rosburg (Mod Lites) | 2nd | - | - | 4th |
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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 | | Dave Rosburg (Stock Non-Wing) | 4th | - | - | 4th |
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| 8/15/2021 | Benton County Speedway - Vinton, IA Weekly IMCA Racing Plus Micro Mods & Legends Pro Legends, Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Dave Rosburg (Dwarf) | 2nd | - | - | 5th |
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| 8/20/2021 | Fayette County Speedway - West Union, IA 2021 Season Championship ~ Sponsored by Appliance Plus of West Union 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Dave Rosburg (600cc Modifieds) | 2nd | - | - | 7th |
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| 8/21/2021 | Winneshiek Raceway - Decorah, IA Upper Iowa Speedway - Weekly Points Race - Race Sponsored by LetterWerks USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Mod Lites | Results | | Dave Rosburg (Mod Lites) | 3rd | - | - | 6th (DNF) |
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| 10/1/2021 | Cedar County Raceway - Tipton, IA Hoker Trucking Darkside Fall Bash 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Dave Rosburg (600cc Modifieds) | 3rd | - | - | 10th |
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| 10/16/2021 | Dubuque Fairgrounds Speedway - Dubuque, IA Iowa Dirt Nationals Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, 600cc Modifieds, Sport Compact, IMCA Modified | Results | | Dave Rosburg (600cc Modifieds) | 7th | - | - | 5th |
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| 11/5/2021 | Creek County Speedway - Sapulpa, OK Restricted 'A' Class: NOW600 Restricted Micros Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros Dwarf, 600cc Modifieds | Results | | Dave Rosburg (600cc Modifieds) | 2nd | - | - | 4th |
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| 11/6/2021 | Creek County Speedway - Sapulpa, OK Restricted 'A' Class: NOW600 Restricted Micros Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros Dwarf, 600cc Modifieds | Results | | Dave Rosburg (600cc Modifieds) | 2nd | - | - | 4th |
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