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| 6/5/2020 | Fayette County Speedway - West Union, IA Weekly Races - sponsored by United Beverage 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Dirt Mini Late Models | Results | | Rayce Mullen (USRA B-Mods) | 6th | - | - | 13th |
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| 6/12/2020 | Fayette County Speedway - West Union, IA Weekly Races - 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Rayce Mullen (USRA B-Mods) | 8th | - | - | 12th |
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| 7/3/2020 | Fayette County Speedway - West Union, IA USRA Iron Man Series for USRA Stock Cars & BMods~ Wkly Pts for other classes Sponsored by Brown's 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Dirt Mini Late Models | Results | | Rayce Mullen (USRA B-Mods) | 5th | - | - | 18th |
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| 7/10/2020 | Fayette County Speedway - West Union, IA Weekly Races 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Dirt Mini Late Models | Results | | Rayce Mullen (USRA B-Mods) | 9th (DNF) | - | - | DNS |
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| 7/17/2020 | Fayette County Speedway - West Union, IA Weekly Races 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Dirt Mini Late Models | Results | | Rayce Mullen (USRA B-Mods) | 7th | - | - | 12th |
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| 7/22/2020 | Fayette County Speedway - West Union, IA 2020 Fayette County Fair Race - 1st Annual FCS Late Model Showdown - $4,000 to win/$400 to start! Dirt Late Models, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Rayce Mullen (USRA B-Mods) | 9th (DNF) | - | - | 16th (DNF) |
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| 7/31/2020 | Fayette County Speedway - West Union, IA Weekly Races - Sponsored by KAR Auto Group 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Rayce Mullen (USRA B-Mods) | 7th | - | - | 7th |
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| 8/7/2020 | Fayette County Speedway - West Union, IA Weekly Races- Sponsored by Chase Trucking 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Dirt Mini Late Models | Results | | Rayce Mullen (USRA B-Mods) | 6th | - | - | 12th |
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| 8/14/2020 | Fayette County Speedway - West Union, IA Weekly Races 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Dirt Mini Late Models | Results | | Rayce Mullen (USRA B-Mods) | 5th | - | - | 11th |
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| 8/21/2020 | Fayette County Speedway - West Union, IA Weekly Races - Season Championships 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Dirt Mini Late Models | Results | | Rayce Mullen (USRA B-Mods) | 6th | - | - | 11th |
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| 9/6/2020 | Fayette County Speedway - West Union, IA USMTS Hunt Race & USRA Iron Man Series for Stock Cars & BMods; USRA Hobby Stocks A Modifieds: USMTS - United States Modified Touring Series USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, IMCA Modified | Results | | Rayce Mullen (USRA B-Mods) | 6th | - | - | 18th |
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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 | | Rayce Mullen (IMCA Northern SportMod) | 6th | - | 5th | - |
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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 | | Rayce Mullen (IMCA Northern SportMod) | 7th | - | 6th | - |
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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 | | Rayce Mullen (IMCA Northern SportMod) | 8th | - | 4th | - |
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| 11/6/2020 | Davenport Speedway - Davenport, IA Gade Race Engines Dirt In November Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Sport Compact | Results | | Rayce Mullen (B Modifieds) | 8th | - | 7th | - |
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