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| 5/14/2021 | Brown County Speedway - Aberdeen, SD SEASON OPENER WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Garrett Gross (WISSOTA Super Stock) | 7th | - | - | 10th |
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| 5/21/2021 | Brown County Speedway - Aberdeen, SD REGULAR SHOW WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Garrett Gross (WISSOTA Super Stock) | 5th (DNF) | - | - | 13th |
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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 | | Garrett Gross (WISSOTA Super Stock) | 6th | - | - | 7th |
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| 6/4/2021 | Brown County Speedway - Aberdeen, SD Structural Buildings WISSOTA Late Model Challenge Series WISSOTA Late Model: Wissota Late Model Challenge Series WISSOTA Street Stock, WISSOTA Super Stock | Results | | Garrett Gross (WISSOTA Super Stock) | 2nd | - | - | 14th |
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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 | | Garrett Gross (WISSOTA Super Stock) | 2nd | - | - | 7th (DNF) |
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| 6/25/2021 | Brown County Speedway - Aberdeen, SD REGULAR SHOW WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Garrett Gross (WISSOTA Super Stock) | 3rd | - | - | 15th |
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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 | | Garrett Gross (WISSOTA Super Stock) | 8th | - | - | 7th (DNF) |
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| 7/9/2021 | Brown County Speedway - Aberdeen, SD DACOTAH RUMBLE/SUPER STOCK SHOOTOUT WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Rain Out |
| 7/16/2021 | Brown County Speedway - Aberdeen, SD REGULAR SHOW WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Garrett Gross (WISSOTA Super Stock) | 6th | - | - | 20th (DNF) |
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| 7/30/2021 | Brown County Speedway - Aberdeen, SD ROC RACE-REGULAR SHOW WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Garrett Gross (WISSOTA Super Stock) | 8th (DNF) | - | - | 18th |
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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 | | Garrett Gross (WISSOTA Super Stock) | 4th | - | - | 7th (DNF) |
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| 8/6/2021 | Brown County Speedway - Aberdeen, SD 2021 SEASON CHAMPIONSHIP (ROC RAIN DATE) WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Garrett Gross (WISSOTA Super Stock) | 5th | - | - | 13th |
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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 | | Garrett Gross (WISSOTA Super Stock) | 8th | - | - | 6th |
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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 | | Garrett Gross (WISSOTA Super Stock) | 2nd | - | - | 11th (DNF) |
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| 9/3/2021 | Brown County Speedway - Aberdeen, SD BIG BUCK NATIONALS WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Garrett Gross (WISSOTA Super Stock) | 4th | - | 6th | 10th |
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