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| 6/1/2012 | Rapid Speedway - Rock Rapids, IA Regular Scheduled Race Event DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds, Limited 360 Sprints - Non-Winged | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 4th | - | - | 6th (DNF) |
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| 6/15/2012 | Rapid Speedway - Rock Rapids, IA 360 Winged Sprint Car Special! 360 Sprints - Winged, DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds, Limited 360 Sprints - Non-Winged | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 5th (DNF) | - | - | 3rd |
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| 6/22/2012 | Rapid Speedway - Rock Rapids, IA 410 Outlaw Sprint Special - Presented by Frontier Bank 410 Sprints - Winged, DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds, Limited 360 Sprints - Non-Winged | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 5th | - | - | 3rd |
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| 6/29/2012 | Rapid Speedway - Rock Rapids, IA Regular Scheduled Race Event DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds, Limited 360 Sprints - Non-Winged | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 4th | - | - | 3rd |
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| 7/20/2012 | Rapid Speedway - Rock Rapids, IA Hobby Stock Special Presented by Hickory Tech DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds, Limited 360 Sprints - Non-Winged | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 4th | - | - | 4th |
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| 7/24/2012 | Rapid Speedway - Rock Rapids, IA Lyon County Fair Races! DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 3rd | - | - | 9th (DNF) |
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| 7/27/2012 | Rapid Speedway - Rock Rapids, IA Precision Auto Body and DeRuyter Pallets Stock Car King of the Hill Challenge! DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds, Limited 360 Sprints - Non-Winged | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 6th | - | - | 5th |
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| 8/10/2012 | Rapid Speedway - Rock Rapids, IA Double Feature Night for Hobbys and Stock Cars! DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds, Limited 360 Sprints - Non-Winged | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 3rd | - | - | 5th |
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| 8/17/2012 | Rapid Speedway - Rock Rapids, IA $1000 to Win! USRA Stock Car Special! DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds, Limited 360 Sprints - Non-Winged | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 4th | - | - | 9th |
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| 8/31/2012 | Rapid Speedway - Rock Rapids, IA Kids for Free!! Season Championship Night! DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds, Limited 360 Sprints - Non-Winged | Results | | Quinton Kolderhoven (DIRTcar Sportsmans) | 2nd | - | - | 8th (DNF) |
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