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| 4/3/2021 | Off Road Speedway - Norfolk, NE 2021 Practice Night Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | - | - | - | - |
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| 4/10/2021 | Off Road Speedway - Norfolk, NE OffRoad Speedway 2021 Season Opener Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 1st | - | - | 12th |
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| 4/24/2021 | Off Road Speedway - Norfolk, NE North-South Challenge $1,500 to win Dirt Late Models: Tri-State Late Models Hobby Stocks, Stock Cars, B Modifieds, Pro Late Model | Results | | Mark Arduser (Hobby Stocks) | 1st | - | - | 11th |
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| 5/1/2021 | Off Road Speedway - Norfolk, NE Regular Race Night Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 5th | - | 3rd | - |
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| 5/7/2021 | Boone County Raceway - Albion, NE Opening Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 1st | - | - | 11th |
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| 5/15/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Mini Sprints Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 1st | - | - | 4th |
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| 5/21/2021 | Boone County Raceway - Albion, NE Autograph Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 4th | - | - | 1st |
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| 5/22/2021 | Off Road Speedway - Norfolk, NE Rumble at the Ranch - MSTS at Off Road Speedway Dirt Super Late Models: SLMR Late Model Series 360 Sprints - Winged, Hobby Stocks, Stock Cars, B Modifieds | Results | | Mark Arduser (Hobby Stocks) | 2nd | - | - | 16th |
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| 5/29/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Midwest Stock Cars & Nickel toss Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 3rd | - | - | 10th |
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| 6/4/2021 | Boone County Raceway - Albion, NE Doc Palmer Memorial Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 4th | - | - | 7th |
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| 6/5/2021 | Off Road Speedway - Norfolk, NE MSTS Western Swing at Off Road Speedway 360 Sprints - Winged, Hobby Stocks, Stock Cars, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 2nd | - | - | 1st |
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| 6/11/2021 | Boone County Raceway - Albion, NE Firemen Appreciation Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 3rd | - | - | 5th |
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| 6/12/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Midwest Stock Cars Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 1st | - | - | 2nd |
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| 6/18/2021 | Boone County Raceway - Albion, NE Alumni Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 2nd | - | - | 4th |
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| 6/19/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Mini Sprints Hobby Stocks, Stock Cars, Winged A-Class, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 1st | - | - | 4th |
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| 7/2/2021 | Boone County Raceway - Albion, NE Boone County Challenge Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 2nd | - | - | 6th |
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| 7/9/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Draw/Redraw Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 2nd | - | - | 7th |
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| 7/11/2021 | Boone County Raceway - Albion, NE Boone County Raceway - WEST Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, Street Stocks | Results | | Mark Arduser (Hobby Stocks) | 7th | - | 16th | - |
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| 7/16/2021 | Boone County Raceway - Albion, NE Alan Rasmussen Tribute/Fan Appreciation Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models, Vintage Full Body Stock Cars, Vintage Modifieds | Results | | Mark Arduser (Hobby Stocks) | 1st | - | - | 3rd |
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| 7/17/2021 | Off Road Speedway - Norfolk, NE Regular Race Night -Ice Cream Night Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 3rd | - | - | 10th |
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| 7/30/2021 | Boone County Raceway - Albion, NE Corn Growers Association Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 4th | - | - | 6th |
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| 7/31/2021 | Off Road Speedway - Norfolk, NE Regular Race Night Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 2nd | - | - | 7th |
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| 8/6/2021 | Boone County Raceway - Albion, NE Kids Coin/Candy Toss Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 2nd | - | - | 2nd |
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| 8/7/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Mini Sprints Hobby Stocks, Stock Cars, Winged A-Class, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 3rd | - | - | 14th |
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| 8/13/2021 | Boone County Raceway - Albion, NE Championship Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 5th | - | - | 6th |
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| 8/14/2021 | Off Road Speedway - Norfolk, NE Kids Night-Race Car Rides Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 3rd | - | - | 3rd |
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| 8/21/2021 | Off Road Speedway - Norfolk, NE $2,000 to win Rumble at the Ranch: Off Road Speedway 360 Sprints - Winged, Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Mark Arduser (Hobby Stocks) | 5th | - | 5th | - |
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| 8/28/2021 | Off Road Speedway - Norfolk, NE Off Road Speedway - WEST Dirt Super Late Models: SLMR Late Model Series 360 Sprints - Winged, Hobby Stocks, Stock Cars, B Modifieds | Results | | Mark Arduser (Hobby Stocks) | 4th | - | - | 5th |
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| 9/17/2021 | US 30 Speedway - Columbus, NE 25th Annual Abe Lincoln Memorial Vintage Full Body Stock Cars, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA RaceSaver Sprint Car | Results | | Mark Arduser (IMCA Hobby Stock) | 5th | - | 6th | - |
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