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| 4/4/2021 | Benton County Speedway - Vinton, IA IMCA Frost Buster IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 9th | - | - | 12th |
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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 | | Brett Thomas (IMCA Northern SportMod) | 3rd | - | - | 24th (DNF) |
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| 4/17/2021 | Independence Motor Speedway - Independence, IA Sport Mods & Stock Cars $750 to Win DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 9th (DNF) | - | - | 18th |
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| 4/18/2021 | Benton County Speedway - Vinton, IA Weekly IMCA Racing Season Opener IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 3rd | - | - | 14th |
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| 4/23/2021 | Davenport Speedway - Davenport, IA Koehler Electric Season Opener A Modifieds, B Modifieds, Street Stocks, Dirt Late Models, Sport Compact | Results | | Brett Thomas (B Modifieds) | 3rd | - | - | DNS |
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| 4/24/2021 | Independence Motor Speedway - Independence, IA Weekly racing DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 2nd | - | - | 7th |
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| 5/1/2021 | Independence Motor Speedway - Independence, IA Caseys Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 3rd | - | - | 10th |
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| 5/2/2021 | Benton County Speedway - Vinton, IA Weekly IMCA Racing Plus Late Models Dirt Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 3rd | - | - | 12th |
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| 5/8/2021 | Maquoketa Speedway - Maquoketa, IA Weekly Racing with AIRS Pro Legends, Vintage Full Body Stock Cars, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Rain Out |
| 5/9/2021 | Benton County Speedway - Vinton, IA Weekly IMCA Racing Plus Micro Sprints Winged Outlaw, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 2nd | - | - | 5th |
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| 5/15/2021 | Independence Motor Speedway - Independence, IA Albert Auto Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 2nd | - | - | 2nd |
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| 5/22/2021 | Independence Motor Speedway - Independence, IA Myers Polaris Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 4th | - | - | 11th |
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| 5/23/2021 | Benton County Speedway - Vinton, IA Weekly IMCA Racing Plus A.I.R.S Cars Vintage Full Body Stock Cars, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 3rd | - | - | 8th |
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| 5/29/2021 | Maquoketa Speedway - Maquoketa, IA Weekly Racing w/ School Bus Races Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 5th | - | 1st | 5th |
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| 5/30/2021 | Benton County Speedway - Vinton, IA Benton County Speedway - EAST Dirt Super Late Models: SLMR Late Model Series Dirt Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 5th | - | - | 7th |
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| 6/5/2021 | Independence Motor Speedway - Independence, IA Fahr Beverage Mid Season DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 1st | - | - | 13th |
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| 6/6/2021 | Benton County Speedway - Vinton, IA IMCA Weekly Racing Plus Legends Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 7th | - | - | 4th |
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| 6/12/2021 | Independence Motor Speedway - Independence, IA Burco Farms Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 3rd | - | - | 5th |
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| 6/13/2021 | Benton County Speedway - Vinton, IA Candy Dash for the Guinness Book of World Records Plus IMCA Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 3rd | - | - | 8th |
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| 6/19/2021 | Independence Motor Speedway - Independence, IA Crawford Farms Hall of Fame Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 3rd | - | - | 5th |
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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 | | Brett Thomas (IMCA Northern SportMod) | 3rd | - | - | 13th |
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| 6/27/2021 | East Moline Speedway - East Moline, IL Mike Mix Memorial IMCA Sport Mod Special Street Stocks, IMCA Late Models, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Hobby Stock, Mod Lites | Results | | Brett Thomas (IMCA Northern SportMod) | 6th | - | - | DNS |
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| 7/3/2021 | Maquoketa Speedway - Maquoketa, IA Weekly Racing w/ Bus Races Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 2nd | - | - | 5th |
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| 7/4/2021 | Benton County Speedway - Vinton, IA Sprint Invaders - Benton County Speedway 360 Sprints - Winged: Sprint Invaders Winged Outlaw, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 3rd | - | - | 8th |
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| 7/11/2021 | Benton County Speedway - Vinton, IA Urbana 5 - Weekly IMCA Racing Plus Legends Cars Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 5th | - | 1st | 14th |
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| 7/17/2021 | Independence Motor Speedway - Independence, IA West Edge Auto Iowa Donor Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 4th (DNF) | - | - | 3rd |
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| 7/18/2021 | Benton County Speedway - Vinton, IA Weekly Racing Plus Late Models Dirt Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 6th | - | - | 7th |
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| 7/24/2021 | Independence Motor Speedway - Independence, IA Iowa Donor Night DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 5th | - | - | 10th |
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| 7/25/2021 | Benton County Speedway - Vinton, IA Weekly IMCA Racing Plus Micro Sprints IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 7th | - | - | 11th (DNF) |
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| 7/31/2021 | Independence Motor Speedway - Independence, IA Weekly Racing DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 5th | - | - | 13th |
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| 8/1/2021 | Benton County Speedway - Vinton, IA Weekly IMCA Racing Plus Legends Cars Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 1st | - | - | 2nd |
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| 8/7/2021 | Maquoketa Speedway - Maquoketa, IA Iowa Donor Network Hall of Fame Night $1000 to win IMCA Modifieds $750 to win IMCA SportMods Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 6th | - | - | 10th |
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| 8/14/2021 | Independence Motor Speedway - Independence, IA Weekly Racing DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 4th | - | - | 13th (DNF) |
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| 8/15/2021 | Benton County Speedway - Vinton, IA Weekly IMCA Racing Plus Micro Mods & Legends Pro Legends, Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 4th | - | - | 3rd |
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| 8/21/2021 | Independence Motor Speedway - Independence, IA Weekly Racing DIRTcar Sport Compact, Hobby Stocks, Stock Cars, A Modifieds, Stock Non-Wing, B Modifieds, Dirt Late Models | Results | | Brett Thomas (B Modifieds) | 2nd | - | - | 1st |
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| 8/22/2021 | Benton County Speedway - Vinton, IA Season Championship IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 2nd | - | - | 5th |
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| 8/28/2021 | Boone Speedway - Boone, IA Season Championship IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Brett Thomas (IMCA Northern SportMod) | 5th | - | - | 9th |
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| 9/6/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s IMCA Late Models, IMCA Northern SportMod, IMCA Hobby Stock | Results | | Brett Thomas (IMCA Northern SportMod) | 1st | - | - | 11th |
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| 9/7/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s Vintage Modifieds, Generic 1, IMCA Northern SportMod, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 3rd | - | - | 10th |
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| 9/8/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brett Thomas (IMCA Northern SportMod) | - | - | - | 8th |
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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 | | Brett Thomas (IMCA Northern SportMod) | 4th | - | - | 13th |
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| 9/18/2021 | Marshalltown Speedway - Marshalltown, IA 15th Annual World Nationals IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 8th | - | 4th | - |
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| 10/1/2021 | Cedar County Raceway - Tipton, IA Hoker Trucking Darkside Fall Bash 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Brett Thomas (IMCA Northern SportMod) | 2nd | - | - | 19th |
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| 10/2/2021 | Cedar County Raceway - Tipton, IA Hoker Trucking Darkside Fall Bash Street Stocks, Vintage Full Body Stock Cars, Super Stocks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Brett Thomas (IMCA Northern SportMod) | 6th | - | 5th | - |
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