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| 4/7/2023 | Marshalltown Speedway - Marshalltown, IA IMCA FrostBuster Night 2 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 4th | - | - | 23rd |
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| 4/12/2023 | Marshalltown Speedway - Marshalltown, IA King of the High Banks $5,000.00 to Win IMCA Stock Cars Practice Night Dwarf, Dirt Pro Trucks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | - | - | - | - |
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| 4/13/2023 | Marshalltown Speedway - Marshalltown, IA King of the High Banks $5,000.00 to Win IMCA Stock Cars Qualifying Night IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brett Maasdam (IMCA Hobby Stock) | 3rd | - | - | 13th (DNF) |
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| 4/14/2023 | Marshalltown Speedway - Marshalltown, IA King of the High Banks $5,000.00 to Win IMCA Stock Cars Iowa Air Barrier Championship Dirt Pro Trucks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 6th | - | - | 12th |
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| 4/28/2023 | Marshalltown Speedway - Marshalltown, IA Ryan Ashton 2023 IMCA Weekly Racing Championship Season Opener Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 5th | - | - | 13th |
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| 5/8/2023 | Independence Motor Speedway - Independence, IA Monday Madness Dirt Super Late Models, DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Brett Maasdam (Hobby Stocks) | 7th | - | 7th | - |
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| 5/11/2023 | Marshalltown Speedway - Marshalltown, IA Muffler Pros Cliff Chambers Memorial Thursday Night Thunder plus Outlaw Cruisers Sportsmans, Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Rain Out |
| 5/19/2023 | CJ Speedway - Columbus Junction, IA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 3rd | - | - | 9th |
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| 5/26/2023 | Marshalltown Speedway - Marshalltown, IA API Solutions Salute to Military Night plus Corn Belt Clash for IMCA Stars Mod Lites Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 3rd | - | - | 13th |
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| 6/2/2023 | Marshalltown Speedway - Marshalltown, IA Capital Sign Twin Topless Dirty 30's $1,000.00 to Win IMCA SportMods/$1,200.00 to Win IMCA Modifieds B Modifieds, Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Sportsman Dwarf | Results | | Brett Maasdam (IMCA Hobby Stock) | 4th | - | - | 9th |
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| 6/9/2023 | Marshalltown Speedway - Marshalltown, IA P&D Welding Solutions $1,000.00 to Win Modifieds Plus $500.00 to Win Modified Structural Shoot-Out Dwarf, Dirt Pro Trucks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 6th | - | - | 9th |
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| 6/16/2023 | Marshalltown Speedway - Marshalltown, IA Midwest Liquid Systems $1,000.00 to Win IMCA Modifieds After The Creek Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brett Maasdam (IMCA Hobby Stock) | 5th | - | - | 9th |
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| 6/23/2023 | Marshalltown Speedway - Marshalltown, IA RBF Electric Night $500.00 to Win IMCA Hobby Stocks IMCA Weekly Racing Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 4th | - | - | 7th |
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| 6/30/2023 | Marshalltown Speedway - Marshalltown, IA Minute Man Printing Night IMCA Weekly Racing Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brett Maasdam (IMCA Hobby Stock) | 5th | - | - | 21st |
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| 7/14/2023 | Marshalltown Speedway - Marshalltown, IA Rumours Bar & Grill plus Salute to Our Marshall County Law Enforcement, First Responder's and EMT's Stock Cars, Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 2nd | - | - | 6th |
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| 7/21/2023 | Marshalltown Speedway - Marshalltown, IA Vessco Inc. $2,000.00 To Win IMCA Stock Cars Highbanks After the Creek Dirt Crown / Outlaw Mini Mods Stock Cars: Dirt Crown Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Sportsman Dwarf | Results | | Brett Maasdam (IMCA Hobby Stock) | 9th (DNF) | - | - | 15th (DNF) |
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| 8/4/2023 | Marshalltown Speedway - Marshalltown, IA Dale DeFrance Memorial Drury Automotive / Knight Sanitation Night at the Races Dirt Super Late Models: SLMR Late Model Series A Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brett Maasdam (IMCA Hobby Stock) | 8th (DNF) | - | 3rd | 14th |
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| 8/11/2023 | Marshalltown Speedway - Marshalltown, IA BHE Night $1,000 to Win Before the Creek IMCA SportMods plus IMCA Weekly Racing Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brett Maasdam (IMCA Hobby Stock) | 5th | - | - | 13th |
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| 8/18/2023 | Marshalltown Speedway - Marshalltown, IA Dairy Queen Larry Wollam IMCA Weekly Racing Season Championship Iowa Seamless Gutters Night Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 6th | - | - | 15th |
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| 8/25/2023 | Marshalltown Speedway - Marshalltown, IA KIX 101.1 KFJB Show Down Shake Down Draw/ReDraw IMCA Mod Lite Championship Night Event Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | 5th | - | - | 4th |
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| 9/14/2023 | Marshalltown Speedway - Marshalltown, IA 17th Annual World Nationals Test N' Tune Night IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Hobby Stock) | - | - | - | - |
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| 9/15/2023 | Marshalltown Speedway - Marshalltown, IA 17th Annual World Nationals J&M Fabrication Friday Night Lights IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Stock Car) | 7th | - | - | 11th |
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| 9/27/2023 | Cedar County Raceway - Tipton, IA 30th Annual Gary Reinhart Memorial Street Stocks, IMCA Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Sport Compact | Results | | Brett Maasdam (Street Stocks) | 5th | - | - | 11th |
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| 9/28/2023 | Cedar County Raceway - Tipton, IA Darkside Fall Bash Night 1 IMCA Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Stock Car) | 3rd | - | - | 18th |
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| 9/29/2023 | Cedar County Raceway - Tipton, IA Darkside Fall Bash Night 2 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Maasdam (IMCA Stock Car) | 8th | - | 10th | - | | Brett Maasdam (IMCA Hobby Stock) | 3rd | - | - | 18th |
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| 9/30/2023 | Cedar County Raceway - Tipton, IA Darkside Fall Bash Night 3 Vintage Full Body Stock Cars, Super Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brett Maasdam (IMCA Stock Car) | 7th | - | 5th | - | | Brett Maasdam (IMCA Hobby Stock) | 4th | - | - | 20th |
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