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| 5/22/2020 | Miller Central Speedway - Miller, SD Make up for rainout-doubleheader Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 4th | - | - | 15th |
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| 5/23/2020 | Miller Central Speedway - Miller, SD All Classes- Sponsor TBA Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 6th (DNF) | - | - | 22nd (DNF) |
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| 5/29/2020 | Miller Central Speedway - Miller, SD Double Header weekend Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 7th (DNF) | - | - | 14th (DNF) |
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| 5/30/2020 | Miller Central Speedway - Miller, SD All Classes- Sponsor TBA Dirt Late Models, Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 7th (DNF) | - | - | 20th |
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| 6/13/2020 | 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 | | Tanner Grohs (WISSOTA Midwest Mods) | 8th | - | - | 16th (DNF) |
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| 6/27/2020 | Miller Central Speedway - Miller, SD Late Model Special- $2,000 to win Pure Stock, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 9th (DNF) | - | - | 18th (DNF) |
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| 7/4/2020 | Miller Central Speedway - Miller, SD All Classes- A Mod Special Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 5th | - | - | 9th |
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| 7/18/2020 | Miller Central Speedway - Miller, SD Street Stock Tour (All Classes) Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 6th (DNF) | - | - | DNS |
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| 7/25/2020 | Miller Central Speedway - Miller, SD All Classes- Sponsor TBA Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 5th | - | - | 17th |
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| 8/1/2020 | Miller Central Speedway - Miller, SD BMod special- $1,000 to win- all classes running Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 3rd | - | - | 20th (DNF) |
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| 8/14/2020 | Miller Central Speedway - Miller, SD 6th Annual Big Dog Race Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 6th | - | - | 20th |
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| 8/15/2020 | Miller Central Speedway - Miller, SD Season Championship! Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 2nd | - | - | 16th (DNF) |
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| 8/22/2020 | Dakota State Fair Speedway - Huron, SD World of Outlaws NOS Energy Drink Sprint Cars WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Grohs (WISSOTA Midwest Mods) | 5th | - | 3rd | 16th |
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