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| 4/24/2021 | Beaver Dam Raceway - Beaver Dam, WI 410 Sprints - Winged: IRA Interstate Racing Association Semi-Pro Legends | Results | | Rob Pribnow (410 Sprints - Winged) | 5th | - | - | 11th |
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| 5/1/2021 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds | Results | | Rob Pribnow (410 Sprints - Winged) | 9th | - | - | - |
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| 5/8/2021 | Cedar Lake Speedway - New Richmond, WI Spring Sprint Special 410 Sprints - Winged: IRA Interstate Racing Association Limited Sprints - Winged: Upper Midwest Sprint Car Series 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series Winged A-Class, 305 Sprints - Non-Winged | Results | | Rob Pribnow (410 Sprints - Winged) | 5th | - | - | 11th |
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| 5/15/2021 | Dirt Oval at Route 66 - Joliet, IL $8,000 to win 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Rob Pribnow (410 Sprints - Winged) | 7th | - | 5th | 19th (DNF) |
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| 5/22/2021 | Beaver Dam Raceway - Beaver Dam, WI 410 Sprints - Winged: IRA Interstate Racing Association Semi-Pro Legends | Results | | Rob Pribnow (410 Sprints - Winged) | 4th | - | - | 22nd |
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| 5/30/2021 | 141 Speedway - Maribel, WI Sunday Funday With the IRA Bumper to Bumper Sprint Cars 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Rob Pribnow (410 Sprints - Winged) | 4th | 2nd | - | 1st |
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| 6/3/2021 | Fairbury Speedway - Fairbury, IL $5,000 to win 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions DIRTcar Late Models | Results | | Rob Pribnow (410 Sprints - Winged) | 8th | - | 5th | - |
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| 6/4/2021 | Wilmot Raceway - Wilmot, WI $6,000 to win 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Rob Pribnow (410 Sprints - Winged) | 6th | - | 5th | - |
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| 6/5/2021 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI $6,000 to win 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions 360 Sprints - Winged | Results | | Rob Pribnow (410 Sprints - Winged) | 3rd | - | - | 16th |
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| 6/6/2021 | Angell Park Speedway - Sun Prairie, WI $6,000 to win 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions Badger Midgets: Badger Midget Auto Racing Association | Results | | Rob Pribnow (410 Sprints - Winged) | 8th | - | 7th | - |
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| 6/11/2021 | Hartford Speedway - Hartford, MI 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: Great Lakes Lightning Sprints Hobby Stocks | Results | | Rob Pribnow (410 Sprints - Winged) | 2nd | - | - | 8th |
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| 6/12/2021 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds | Results | | Rob Pribnow (410 Sprints - Winged) | 4th | - | - | 9th |
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| 6/19/2021 | Beaver Dam Raceway - Beaver Dam, WI 410 Sprints - Winged: World of Outlaws Lightning Sprints: IRA Lightning Sprints Semi-Pro Legends | Results | | Rob Pribnow (410 Sprints - Winged) | 9th (DNF) | - | 7th | - |
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| 6/27/2021 | Angell Park Speedway - Sun Prairie, WI 410 Sprints - Winged: IRA Interstate Racing Association Badger Midgets: Badger Midget Auto Racing Association Semi-Pro Legends | Results | | Rob Pribnow (410 Sprints - Winged) | 2nd | - | - | 6th |
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| 7/1/2021 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI $5000 to win NASCAR Kick Off 360 Sprints - Winged: MSA Sprint Car Association 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Rob Pribnow (410 Sprints - Winged) | 2nd | - | - | 9th |
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| 7/23/2021 | Outagamie Speedway - Seymour, WI Fair Race 410 Sprints - Winged: IRA Interstate Racing Association IMCA Northern SportMod, IMCA Sport Compact | Results | | Rob Pribnow (410 Sprints - Winged) | 4th | - | - | 12th |
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| 7/24/2021 | Beaver Dam Raceway - Beaver Dam, WI Scott Semmelmann Memorial 410 Sprints - Winged: IRA Interstate Racing Association Semi-Pro Legends | Results | | Rob Pribnow (410 Sprints - Winged) | 5th | - | - | 13th |
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| 7/30/2021 | Langlade County Speedway - Antigo, WI 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Rob Pribnow (410 Sprints - Winged) | 2nd | - | - | 8th |
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| 7/31/2021 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI Frank Filskov Memorial 360 Sprints - Winged: MSA Sprint Car Association 410 Sprints - Winged: IRA Interstate Racing Association Badger Midgets: Badger Midget Auto Racing Association | Results | | Rob Pribnow (410 Sprints - Winged) | - | - | - | - |
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| 8/7/2021 | Wilmot Raceway - Wilmot, WI Founders Night 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds | Results | | Rob Pribnow (410 Sprints - Winged) | 2nd | - | - | 9th |
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| 8/21/2021 | Wilmot Raceway - Wilmot, WI Kenosha County Fair/Roger Iles Tribute 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Rob Pribnow (410 Sprints - Winged) | 6th | - | - | 9th |
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| 8/22/2021 | Angell Park Speedway - Sun Prairie, WI Corn Fest 410 Sprints - Winged: IRA Interstate Racing Association Badger Midgets: Badger Midget Auto Racing Association Semi-Pro Legends | Results | | Rob Pribnow (410 Sprints - Winged) | 5th | - | - | DNS |
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| 8/29/2021 | Dirt Oval at Route 66 - Joliet, IL Bill Waite Jr. Memorial 410 Sprints - Winged: IRA Interstate Racing Association with MOWA-Midwest Open Wheel Association | Rain Out |
| 9/3/2021 | Dodge County Fairgrounds - Beaver Dam, WI Harry Neitzel Tribute 410 Sprints - Winged: IRA Interstate Racing Association 360 Sprints - Winged | Rain Out |
| 9/4/2021 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI Sheboygan County Fair 360 Sprints - Winged: MSA Sprint Car Association 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Rob Pribnow (410 Sprints - Winged) | 4th | - | - | 11th |
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| 9/5/2021 | 141 Speedway - Maribel, WI Sunday Funday - IRA Bumper to Bumper Sprint Cars with Grand Nationals, Street Stocks and Legends 410 Sprints - Winged: IRA Interstate Racing Association Stock Cars, Sportsmans | Results | | Rob Pribnow (410 Sprints - Winged) | 7th | - | 2nd | 11th |
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| 9/10/2021 | Outagamie Speedway - Seymour, WI 410 Sprints - Winged: IRA Interstate Racing Association Baby Grand, IMCA Northern SportMod | Results | | Rob Pribnow (410 Sprints - Winged) | 5th | - | - | 11th |
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| 9/11/2021 | Cedar Lake Speedway - New Richmond, WI Jerry Richert Memorial 360 Sprints - Winged: Midwest Power Series 410 Sprints - Winged: IRA Interstate Racing Association 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 305 Sprints - Non-Winged | Results | | Rob Pribnow (410 Sprints - Winged) | 5th | - | - | 15th |
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| 9/18/2021 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints Hornets | Results | | Rob Pribnow (410 Sprints - Winged) | 5th | - | - | 9th |
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| 9/24/2021 | Dodge County Fairgrounds - Beaver Dam, WI Checkered Classic/Rick Schmidt Memorial 410 Sprints - Winged: IRA Interstate Racing Association Non Wing Crate Sprints: Wisconsin wingLESS Sprints 360 Sprints - Winged | Rain Out |
| 9/25/2021 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI WI Sprint Car Championships 360 Sprints - Winged: MSA Sprint Car Association 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Rob Pribnow (410 Sprints - Winged) | 4th | - | - | 14th |
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