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| 7/17/2021 | Fairgrounds Speedway Cortez - Cortez, CO Dirty 30 IMCA Hobby Stock Challenge Midgets, Factory Stocks, Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Trevor Sivers (600cc Modifieds) | 4th | - | - | 16th (DNF) |
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| 8/27/2021 | Fairgrounds Speedway Cortez - Cortez, CO Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Trevor Sivers (600cc Modifieds) | DNS | - | - | DNS |
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| 8/28/2021 | Fairgrounds Speedway Cortez - Cortez, CO Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Trevor Sivers (600cc Modifieds) | 6th (DNF) | - | - | 12th (DNF) |
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| 9/18/2021 | Fairgrounds Speedway Cortez - Cortez, CO Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact | Results | | Trevor Sivers (600cc Modifieds) | 5th | - | - | DNS |
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| 9/24/2021 | Fairgrounds Speedway Cortez - Cortez, CO Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact | Results | | Trevor Sivers (600cc Modifieds) | 10th | - | - | 19th (DNF) |
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| 9/25/2021 | Fairgrounds Speedway Cortez - Cortez, CO Winged A-Class: NOW600 A-Class Micros Stock Non-Wing: NOW600 Non-Wing Micros Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact | Results | | Trevor Sivers (600cc Modifieds) | 7th | - | - | 19th (DNF) |
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| 9/26/2021 | Fairgrounds Speedway Cortez - Cortez, CO Hobby Stocks, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact | Results | | Trevor Sivers (600cc Modifieds) | - | - | - | - |
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