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| 4/2/2021 | Marshalltown Speedway - Marshalltown, IA 141 Speedway / Left Turn Lounge IMCA FrostBuster IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Mark Hidlebaugh (IMCA Stock Car) | 12th | - | 9th | - |
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| 4/3/2021 | Boone Speedway - Boone, IA IMCA Frostbuster IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Mark Hidlebaugh (IMCA Stock Car) | 8th | - | 8th | - |
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| 4/10/2021 | Boone Speedway - Boone, IA Season Opener IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 6th | - | 9th (DNF) | - |
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| 4/16/2021 | Marshalltown Speedway - Marshalltown, IA Hoker Trucking East Super Late Models Series Kevin "Sharp Shooter" Miller Lite 30 Dirt Super Late Models: SLMR Late Model Series Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Mark Hidlebaugh (IMCA Stock Car) | 7th (DNF) | - | 4th | 17th |
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| 4/17/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #2 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 7th | - | 5th (DNF) | - |
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| 4/23/2021 | Marshalltown Speedway - Marshalltown, IA Sleeping Angel's Foundation Fundraiser Night Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Mark Hidlebaugh (IMCA Stock Car) | 7th | - | - | 12th |
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| 4/24/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #3 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 4th | - | - | 18th |
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| 4/30/2021 | Marshalltown Speedway - Marshalltown, IA LOCAL UAW 893 Cliff Chambers Memorial Dwarf, Dirt Pro Trucks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Mark Hidlebaugh (IMCA Stock Car) | 6th | - | - | 14th |
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| 5/6/2021 | Marshalltown Speedway - Marshalltown, IA Dale DeFrance Memorial Thursday Night Thunder Dwarf, IMCA Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Mark Hidlebaugh (IMCA Stock Car) | 6th | - | - | 17th |
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| 5/8/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #4 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Rain Out |
| 5/14/2021 | Marshalltown Speedway - Marshalltown, IA Casey's Salute to Military / Haverhill Social Club Night Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Mark Hidlebaugh (IMCA Stock Car) | - | - | - | - |
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| 5/15/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #5 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 7th | - | - | 16th (DNF) |
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| 5/29/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #7 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 4th | - | - | 23rd (DNF) |
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| 6/4/2021 | Marshalltown Speedway - Marshalltown, IA Old Timers Lounge Night Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Mark Hidlebaugh (IMCA Stock Car) | 5th | - | - | 14th |
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| 6/5/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #8 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 7th | - | - | 15th |
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| 6/12/2021 | Boone Speedway - Boone, IA Saturday Night Series #9 + IMCA Weekly Points – $500 to win Stock Cars IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 8th | - | 12th | - |
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| 6/19/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #10 Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 7th | - | 1st | 12th |
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| 6/26/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #11 + Hawkeye Challenge Stock Cars, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 6th | - | - | 14th |
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| 7/3/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #12 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 8th | - | 8th | - |
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| 7/8/2021 | Kossuth County Speedway - Algona, IA The Bobby Thilges Sport Compact Bumble Bee Nationals B Modifieds, Street Stocks, Enduro, IMCA Modified, IMCA Hobby Stock, IMCA Sport Compact | Results | | Mark Hidlebaugh (Street Stocks) | 8th | - | - | 16th |
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| 7/17/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #14 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 5th | - | - | 13th |
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| 7/24/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #15 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 7th | - | - | 12th |
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| 7/31/2021 | Boone Speedway - Boone, IA Salute to Veterans/Saturday Night Series Weekly #16 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 7th | - | 5th | - |
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| 8/5/2021 | Kossuth County Speedway - Algona, IA Hovinga & Harken Memorial Fair Special B Modifieds, Street Stocks, Enduro, IMCA Modified, IMCA Hobby Stock, IMCA Sport Compact | Results | | Mark Hidlebaugh (Street Stocks) | 5th | - | - | 14th |
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| 8/7/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #17 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 8th | - | 11th (DNF) | - |
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| 8/14/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #18 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 6th | - | 5th | - |
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| 8/21/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #19 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Mark Hidlebaugh (IMCA Stock Car) | 4th | - | 4th | - |
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| 9/16/2021 | Marshalltown Speedway - Marshalltown, IA 15th Annual World Nationals Practice Night IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Mark Hidlebaugh (IMCA Stock Car) | - | - | - | - |
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| 9/17/2021 | Marshalltown Speedway - Marshalltown, IA 15th Annual World Nationals IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Mark Hidlebaugh (IMCA Stock Car) | 8th (DNF) | - | - | DNS |
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