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| 5/31/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA IMCA Weekly Racing Hobby Stocks, A Modifieds, B Modifieds, IMCA Late Models, Sport Compact | Results | | Grant Manthe (B Modifieds) | 7th | - | - | 16th |
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| 6/5/2020 | Lafayette County Speedway - Darlington, WI Season Opener! Economy Late Models, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Hobby Stock | Results | | Grant Manthe (IMCA Northern SportMod) | 4th | - | - | 15th |
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| 6/12/2020 | Lafayette County Speedway - Darlington, WI Weekly Racing Economy Late Models, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Hobby Stock | Results | | Grant Manthe (IMCA Northern SportMod) | 6th | - | - | 13th |
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| 6/28/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA IMCA Weekly Racing Hobby Stocks, A Modifieds, B Modifieds, IMCA Late Models, Sport Compact | Results | | Grant Manthe (B Modifieds) | 6th | - | - | 15th |
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| 7/5/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA IMCA Weekly Racing Hobby Stocks, A Modifieds, B Modifieds, Masters Legends, IMCA Late Models, Sport Compact | Results | | Grant Manthe (B Modifieds) | 1st | - | - | 5th |
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| 7/12/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA IMCA Weekly Racing Hobby Stocks, A Modifieds, B Modifieds, Semi-Pro Legends, IMCA Late Models, Sport Compact | Results | | Grant Manthe (B Modifieds) | 3rd | - | - | 13th |
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| 7/19/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA IMCA Weekly Racing Hobby Stocks, A Modifieds, B Modifieds, IMCA Late Models, Sport Compact | Results | | Grant Manthe (B Modifieds) | 1st | - | - | 7th |
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| 7/30/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA Dubuque County Fair Races w/Sprint Invaders 360 Sprints - Winged: Sprint Invaders Hobby Stocks, A Modifieds, B Modifieds | Results | | Grant Manthe (B Modifieds) | 2nd | - | - | 7th |
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| 8/2/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA Julien Dubuque Classic Fair Races Hobby Stocks, A Modifieds, B Modifieds, Vintage Modifieds, IMCA Late Models, Sport Compact | Results | | Grant Manthe (B Modifieds) | 7th | - | - | 14th |
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| 8/16/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA IMCA Weekly Racing Hobby Stocks, A Modifieds, B Modifieds, Semi-Pro Legends, IMCA Late Models, Sport Compact | Results | | Grant Manthe (B Modifieds) | 2nd | - | - | 3rd |
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| 8/23/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA IMCA Weekly Racing Hobby Stocks, A Modifieds, B Modifieds, IMCA Late Models, Sport Compact | Results | | Grant Manthe (B Modifieds) | 4th | - | - | 9th |
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| 8/30/2020 | Dubuque Fairgrounds Speedway - Dubuque, IA IMCA Weekly Racing Season Championship Hobby Stocks, A Modifieds, B Modifieds, Masters Legends, IMCA Late Models, Sport Compact, Dirt Mini Late Models | Results | | Grant Manthe (B Modifieds) | 5th | - | - | 7th |
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| 9/4/2020 | 300 Raceway - Farley, IA 43rd Annual Done Right.TV Yankee Dirt Track Classic Dirt Super Late Models: SLMR Late Model Series Stock Cars, A Modifieds, B Modifieds | Results | | Grant Manthe (B Modifieds) | 4th | - | 13th | - |
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| 9/5/2020 | 300 Raceway - Farley, IA 43rd Annual Done Right.TV Yankee Dirt Track Classic Dirt Super Late Models: SLMR Late Model Series Stock Cars, A Modifieds, B Modifieds | Results | | Grant Manthe (B Modifieds) | 8th | - | 8th | - |
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| 10/1/2020 | Cedar County Raceway - Tipton, IA Hoker Trucking Fall Bash Night 1 IMCA Late Models, Super Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Grant Manthe (IMCA Northern SportMod) | 4th | - | 6th | - |
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| 10/2/2020 | Cedar County Raceway - Tipton, IA Fall Bash 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Grant Manthe (IMCA Northern SportMod) | 4th | - | 2nd | 18th |
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| 10/3/2020 | Cedar County Raceway - Tipton, IA Fall Bash Street Stocks, Vintage Full Body Stock Cars, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Grant Manthe (IMCA Northern SportMod) | 3rd | - | - | 13th |
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