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| 3/30/2021 | Stuart Speedway - Stuart, IA AgHub Midwest IMCA Frostbuster IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Garrett Nelson (IMCA Northern SportMod) | 7th | - | - | 12th |
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| 4/14/2021 | Stuart Speedway - Stuart, IA Lucas Oil MLRA Late Models Dirt Super Late Models: Lucas Oil MLRA IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Garrett Nelson (IMCA Northern SportMod) | 2nd | - | - | 5th |
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| 4/30/2021 | Boone Speedway - Boone, IA Hawkeye 100 World of Outlaws Late Models Dirt Super Late Models: World of Outlaws - Late Models A Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Garrett Nelson (IMCA Northern SportMod) | 1st | - | - | 3rd |
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| 5/1/2021 | Boone Speedway - Boone, IA Hawkeye 100 World of Outlaws Late Models Dirt Super Late Models: World of Outlaws - Late Models A Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Garrett Nelson (IMCA Northern SportMod) | 2nd | - | - | 10th |
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| 5/5/2021 | Stuart Speedway - Stuart, IA Bill Davis Memorial 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, IMCA Mod Lite | Results | | Garrett Nelson (IMCA Northern SportMod) | 3rd | - | - | 10th |
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| 5/12/2021 | Stuart Speedway - Stuart, IA Jake Durbin Memorial 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, IMCA Mod Lite | Results | | Garrett Nelson (IMCA Northern SportMod) | 6th (DNF) | - | - | 9th |
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| 5/26/2021 | Stuart Speedway - Stuart, IA Weekly Racing 600cc Modifieds, Dirt Pro Trucks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Garrett Nelson (IMCA Northern SportMod) | 2nd | - | - | 8th |
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| 5/30/2021 | Stuart Speedway - Stuart, IA Whole Hog 50 IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact, IMCA Mod Lite | Results | | Garrett Nelson (IMCA Northern SportMod) | 2nd | - | - | 8th |
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| 5/31/2021 | Stuart Speedway - Stuart, IA Whole Hog 50 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Garrett Nelson (IMCA Northern SportMod) | 1st | - | - | 8th |
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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 | | Garrett Nelson (IMCA Northern SportMod) | 3rd | - | - | 23rd (DNF) |
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| 6/5/2021 | Bethany Fairgrounds Speedway - Bethany, MO Non-Winged Sprints: Midwest Wingless Racing Association B Modifieds, Limited Sport Mod, Pure Stock | Results | | Garrett Nelson (Limited Sport Mod) | 2nd | - | - | 5th |
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| 6/11/2021 | Marshalltown Speedway - Marshalltown, IA Casey's Salute to Marshalltown Firefighters, EMTs and First Responders Dwarf, IMCA Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Garrett Nelson (IMCA Northern SportMod) | 1st | - | - | 10th |
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| 6/15/2021 | Stuart Speedway - Stuart, IA Dynamic Drivelines Dirt Duel IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, IMCA Mod Lite | Results | | Garrett Nelson (IMCA Northern SportMod) | 4th | - | - | - |
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| 6/16/2021 | Stuart Speedway - Stuart, IA Dynamic Drivelines Dirt Duel 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Garrett Nelson (IMCA Northern SportMod) | 1st | - | - | 6th |
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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 | | Garrett Nelson (IMCA Northern SportMod) | 5th | - | - | 6th |
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| 6/23/2021 | Stuart Speedway - Stuart, IA Weekly Racing 600cc Modifieds, Dirt Pro Trucks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, IMCA Mod Lite | Results | | Garrett Nelson (IMCA Northern SportMod) | 4th | - | - | 9th |
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| 7/1/2021 | Stuart Speedway - Stuart, IA Ron Little Memorial IMCA Modified: Midwest Madness Tour 600cc Modifieds, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Garrett Nelson (IMCA Northern SportMod) | 1st | - | - | 2nd |
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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 | | Garrett Nelson (IMCA Northern SportMod) | 6th | - | - | 12th |
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| 7/4/2021 | Boone Speedway - Boone, IA Eve of Destruction IMCA Northern SportMod | Results | | Garrett Nelson (IMCA Northern SportMod) | 5th | - | - | 3rd |
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| 7/16/2021 | Marshalltown Speedway - Marshalltown, IA Toby K's Hideaway $1,000.00 to Win IMCA Stock Cars Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Garrett Nelson (IMCA Northern SportMod) | 3rd | - | - | 8th |
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| 7/17/2021 | Adams County Speedway - Corning, IA Chat Mobility Presents "Kids Money Grab" + NAAPWS Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Garrett Nelson (B Modifieds) | 5th | - | - | 13th |
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| 7/21/2021 | Stuart Speedway - Stuart, IA Clint Walrod Memorial 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, IMCA Mod Lite | Results | | Garrett Nelson (IMCA Northern SportMod) | 4th | - | - | 6th |
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| 8/1/2021 | Stuart Speedway - Stuart, IA Stuart Speedway - WEST Dirt Super Late Models: SLMR Late Model Series Winged A-Class, 600cc Modifieds, Dirt Pro Trucks, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Garrett Nelson (IMCA Northern SportMod) | 6th | - | - | 6th |
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| 8/11/2021 | Stuart Speedway - Stuart, IA Season Championship 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, IMCA Mod Lite | Results | | Garrett Nelson (IMCA Northern SportMod) | 2nd | - | - | 15th (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 | | Garrett Nelson (IMCA Northern SportMod) | 7th | - | 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 | | Garrett Nelson (IMCA Northern SportMod) | 3rd | - | - | 11th |
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| 8/28/2021 | Adams County Speedway - Corning, IA McCunn Specialty Firearms Presents B-Mod & Modified Shootouts + NAAPWS Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Garrett Nelson (B Modifieds) | 5th | - | - | 11th |
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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 | | Garrett Nelson (IMCA Northern SportMod) | 7th | - | - | - |
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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 | | Garrett Nelson (IMCA Northern SportMod) | 4th | - | 2nd | - |
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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 | | Garrett Nelson (IMCA Northern SportMod) | 4th | - | - | 11th |
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| 10/1/2021 | Adams County Speedway - Corning, IA 23rd Annual NAPA "Tradition" Kevin Sharp Memorial--Custom Diesel Drivers Training "Pink Out" Night Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Garrett Nelson (B Modifieds) | 3rd | - | - | 10th |
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| 10/2/2021 | Adams County Speedway - Corning, IA 23rd Annual NAPA Auto Parts "Tradition" Night # 2 Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Garrett Nelson (B Modifieds) | 5th | - | - | 19th |
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