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| 5/15/2021 | I-90 Speedway - Hartford, SD Northern Outlaw Sprint Association + Paramount Racing 410 Sprints - Winged: Northern Outlaw Sprint Association 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 8th (DNF) | - | 8th | - |
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| 5/22/2021 | I-90 Speedway - Hartford, SD Paramount Racing Series 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 2nd | - | - | 18th (DNF) |
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| 6/5/2021 | I-90 Speedway - Hartford, SD CCL Labels Night: Paramount Racing Series 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 4th | - | - | 19th (DNF) |
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| 6/12/2021 | I-90 Speedway - Hartford, SD MSTS at I-90 Speedway with Power Series 360 Sprints - Winged: Midwest Sprint Touring Series with Midwest Power Series 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 1st | - | - | 16th (DNF) |
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| 6/19/2021 | I-90 Speedway - Hartford, SD Precision Drywall presents: Hartford Night w/ Paramount Racing Series 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 2nd | - | - | 10th |
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| 7/3/2021 | I-90 Speedway - Hartford, SD MSTS at I-90 Speedway 360 Sprints - Winged: Midwest Sprint Touring Series 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 7th | - | 3rd | 10th |
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| 7/17/2021 | I-90 Speedway - Hartford, SD MSTS at I-90 Speedway 360 Sprints - Winged: Midwest Sprint Touring Series 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 4th | - | - | 11th |
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| 7/24/2021 | I-90 Speedway - Hartford, SD Dirt Late Models: Tri-State Late Models 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 7th | - | 5th | 18th |
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| 7/31/2021 | I-90 Speedway - Hartford, SD Chuck Zitterich Memorial at I-90 Speedway with Power Series 360 Sprints - Winged: Midwest Sprint Touring Series with Midwest Power Series 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 4th | - | - | 19th (DNF) |
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| 8/7/2021 | I-90 Speedway - Hartford, SD Paramount Racing Series 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 3rd | - | - | 17th |
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| 8/14/2021 | I-90 Speedway - Hartford, SD Hartford Vet Clinic presents: Pitstop Challenge & Paramount Racing Series 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 5th | - | - | 16th (DNF) |
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| 8/21/2021 | I-90 Speedway - Hartford, SD LMSS Legends & Paramount Racing Series 305 Sprints - Winged, Street Stocks, Masters Legends, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 1st | - | - | 9th |
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| 9/11/2021 | I-90 Speedway - Hartford, SD Paramount Racing Series Championship 305 Sprints - Winged, Street Stocks, USRA B-Mods, USRA Hobby Stocks | Results | | Curt Ottoson (USRA B-Mods) | 3rd | - | - | 19th (DNF) |
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| 9/24/2021 | Huset's Speedway - Brandon, SD C & B Operations Cheater's Night / Tri-State Late Models Dirt Late Models: Tri-State Late Models Hobby Stocks, B Modifieds, Street Stocks | Results | | Curt Ottoson (B Modifieds) | 5th | - | - | 7th |
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