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| 5/15/2021 | Miller Central Speedway - Miller, SD Regular Races Sponsored by Agtegra Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 4th | - | - | 7th (DNF) |
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| 5/22/2021 | Miller Central Speedway - Miller, SD Regular Races sponsored by Nelson's HB Seed Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 5th (DNF) | - | - | 10th (DNF) |
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| 6/12/2021 | Miller Central Speedway - Miller, SD Tri-State Late Model Series Dirt Late Models: Tri-State Late Models Pure Stock, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 5th | - | - | 10th |
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| 6/19/2021 | Miller Central Speedway - Miller, SD ROC Races Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 7th | - | - | 9th |
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| 6/26/2021 | Miller Central Speedway - Miller, SD Regular Races Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 4th | - | - | 11th |
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| 7/3/2021 | Miller Central Speedway - Miller, SD 4th of July Special Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 6th (DNF) | - | - | 14th (DNF) |
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| 7/17/2021 | Miller Central Speedway - Miller, SD Regular Races Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 4th | - | - | 10th (DNF) |
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| 7/24/2021 | Miller Central Speedway - Miller, SD Street Stock Special Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 6th | - | - | 11th |
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| 7/31/2021 | Miller Central Speedway - Miller, SD Regular Races Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 7th | - | - | 12th |
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| 8/7/2021 | Miller Central Speedway - Miller, SD 6th Annual Dog Days of Summer Big Dog Race Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 5th | - | - | 9th |
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| 8/13/2021 | Miller Central Speedway - Miller, SD Season Championship Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 6th | - | - | 8th |
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| 8/14/2021 | Miller Central Speedway - Miller, SD Advantage RV Mod Tour A Modifieds, Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Mackenzie Kopecky (Pure Stock) | 4th | - | - | 7th |
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