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| 5/8/2021 | El Paso County Raceway - Calhan, CO United Rebel Winged Sprint Race Hobby Stocks, B Modifieds, Street Stocks, Dwarf, Lightning Sprints, 600cc Modifieds, Sport Compact | Results | | Mike McMillen (Lightning Sprints) | 6th | - | - | 12th |
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| 5/28/2021 | Central Missouri Speedway - Warrensburg, MO Friday Practice at the 'Burg Dirt Super Late Models, Hobby Stocks, A Modifieds, Midwest Modifieds, Stock Non-Wing, B Modifieds, Non-Winged Sprints, Vintage Full Body Stock Cars, Lightning Sprints, Super Stocks, Mod Lites | Results | | Mike McMillen (Lightning Sprints) | - | - | - | - |
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| 6/4/2021 | Phillips County Raceway - Holyoke, CO Friday Night Lights Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Dwarf, Lightning Sprints, 600cc Modifieds, Sport Compact | Results | | Mike McMillen (Lightning Sprints) | 4th | - | - | 7th |
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| 6/12/2021 | El Paso County Raceway - Calhan, CO HP Late Models & RMMRA Midget Race Midgets, Hobby Stocks, Winged A-Class, B Modifieds, Street Stocks, Dirt Late Models, Lightning Sprints, Sport Compact | Results | | Mike McMillen (Lightning Sprints) | 2nd | - | - | 11th |
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| 7/2/2021 | Phillips County Raceway - Holyoke, CO Celebrating Independence Race Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Dwarf, Lightning Sprints, 600cc Modifieds, Sport Compact | Results | | Mike McMillen (Lightning Sprints) | 5th | - | - | 9th (DNF) |
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| 7/10/2021 | El Paso County Raceway - Calhan, CO Fair Race Hobby Stocks, B Modifieds, Street Stocks, Dwarf, Lightning Sprints, 600cc Modifieds, Sport Compact | Results | | Mike McMillen (Lightning Sprints) | 1st | - | - | 3rd |
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| 8/14/2021 | El Paso County Raceway - Calhan, CO Let's Go Racing Winged A-Class: NOW600 A-Class Micros Hobby Stocks, B Modifieds, Street Stocks, Non-Winged Sprints, 305 Sprints - Non-Winged, Dwarf, Lightning Sprints, 600cc Modifieds, Sport Compact | Results | | Mike McMillen (Lightning Sprints) | 5th | - | - | 11th |
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| 9/11/2021 | El Paso County Raceway - Calhan, CO Restricted 'A' Class: NOW600 Restricted Micros Winged A-Class: NOW600 A-Class Micros Dirt Late Models, Non-Winged Sprints, 305 Sprints - Non-Winged, Dwarf, Lightning Sprints | Results | | Mike McMillen (Lightning Sprints) | 4th | - | - | 7th |
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| 9/25/2021 | El Paso County Raceway - Calhan, CO Restricted 'A' Class: NOW600 Restricted Micros Winged A-Class: NOW600 A-Class Micros Midgets, Non-Winged Sprints, 305 Sprints - Non-Winged, Dwarf, Lightning Sprints | Results | | Mike McMillen (Lightning Sprints) | - | - | - | 9th |
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