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| 5/7/2021 | Thomas County Speedway - Colby, KS Fan Appreciation Night IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Jarrett Marker (IMCA Sport Compact) | 6th | - | - | 5th |
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| 5/21/2021 | Thomas County Speedway - Colby, KS Friday Night Lights IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Jarrett Marker (IMCA Sport Compact) | 4th | - | - | 1st |
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| 5/22/2021 | Thomas County Speedway - Colby, KS K.A.R. Vintage Car Night IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Jarrett Marker (IMCA Sport Compact) | 4th | - | - | 2nd |
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| 6/5/2021 | Sherman County Speedway - Goodland, KS Summer Kick Off Sport Compact, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Jarrett Marker (Sport Compact) | 6th | - | - | 6th |
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| 6/6/2021 | Sherman County Speedway - Goodland, KS Cowboy Clash 305 Sprints - Winged, Sport Compact, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Jarrett Marker (Sport Compact) | 3rd | - | - | 5th |
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| 6/11/2021 | Thomas County Speedway - Colby, KS Checkered Flag Night IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Jarrett Marker (IMCA Sport Compact) | 3rd | - | - | 6th (DNF) |
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| 6/18/2021 | WaKeeney Speedway - Wakeeney, KS Weekly Racing Series 305 Sprints - Winged, Hobby Stocks, Sportsmans, B Modifieds, Super Stocks | Results | | Jarrett Marker (Sportsmans) | 1st | - | - | 3rd (DNF) |
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| 6/19/2021 | Thomas County Speedway - Colby, KS 15th Annual Jeff Hartwell Memorial IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Rain Out |
| 6/25/2021 | Oberlin Speedway - Oberlin, KS IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Jarrett Marker (IMCA Sport Compact) | 2nd | - | - | 4th |
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| 7/9/2021 | Thomas County Speedway - Colby, KS Bracket Race Night IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Jarrett Marker (IMCA Sport Compact) | 5th | - | - | 7th (DNF) |
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| 8/27/2021 | Oberlin Speedway - Oberlin, KS IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Jarrett Marker (IMCA Sport Compact) | 4th | - | - | 4th |
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| 9/11/2021 | WaKeeney Speedway - Wakeeney, KS Season Finale 305 Sprints - Winged, Hobby Stocks, Sportsmans, Generic 1 | Results | | Jarrett Marker (Sportsmans) | 2nd | - | - | 3rd |
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