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| 4/10/2021 | Off Road Speedway - Norfolk, NE OffRoad Speedway 2021 Season Opener Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Allen Zimmerman (Stock Cars) | 6th | - | 7th | - |
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| 4/15/2021 | US 30 Speedway - Columbus, NE Opening Night IMCA Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 7th | - | - | 10th |
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| 4/17/2021 | Phillips County Raceway - Holyoke, CO Double Header - Day One (Season Opener) Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Dwarf, 600cc Modifieds, Sport Compact | Results | | Allen Zimmerman (Street Stocks) | 7th | - | - | 7th (DNF) |
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| 4/18/2021 | Phillips County Raceway - Holyoke, CO Double Header - Day Two Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Dwarf, 600cc Modifieds, Sport Compact | Results | | Allen Zimmerman (Street Stocks) | 4th | - | - | 8th |
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| 4/22/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 4th | - | - | 14th |
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| 4/24/2021 | Lincoln County Raceway - North Platte, NE Season Opener Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Allen Zimmerman (Stock Cars) | - | - | - | 6th |
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| 4/29/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | DNS | - | - | 9th |
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| 5/1/2021 | Off Road Speedway - Norfolk, NE Regular Race Night Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Allen Zimmerman (Stock Cars) | 4th | - | - | 15th |
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| 5/2/2021 | Dawson County Raceway - Lexington, NE Season Opener! IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Allen Zimmerman (IMCA Stock Car) | 5th | - | - | 15th |
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| 5/6/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 5th | - | - | 9th |
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| 5/7/2021 | Boone County Raceway - Albion, NE Opening Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Allen Zimmerman (Street Stocks) | 9th | - | - | 16th |
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| 5/8/2021 | Lincoln County Raceway - North Platte, NE Mothers Day Special Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Allen Zimmerman (Stock Cars) | - | - | - | 11th |
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| 5/9/2021 | Phillips County Raceway - Holyoke, CO Mother's Day Race Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Dwarf, 600cc Modifieds, Sport Compact | Results | | Allen Zimmerman (Street Stocks) | 7th | - | - | 8th |
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| 5/13/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | DNS | - | - | 8th |
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| 5/15/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Mini Sprints Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, B Modifieds, Dirt Late Models | Results | | Allen Zimmerman (Stock Cars) | 7th | - | 8th | - |
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| 5/21/2021 | Boone County Raceway - Albion, NE Autograph Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Allen Zimmerman (Street Stocks) | 7th | - | - | 15th |
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| 5/22/2021 | Off Road Speedway - Norfolk, NE Rumble at the Ranch - MSTS at Off Road Speedway 360 Sprints - Winged: Midwest Sprint Touring Series Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, Stock Cars, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | 6th | - | - | 15th |
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| 5/23/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | 4th | - | - | 3rd |
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| 5/28/2021 | Lincoln County Raceway - North Platte, NE Memorial Day- Salute To Veterans Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | - | - | - | 10th |
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| 5/29/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Midwest Stock Cars & Nickel toss Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Allen Zimmerman (Stock Cars) | 6th | - | - | 11th |
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| 6/3/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 3rd | - | - | 10th |
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| 6/4/2021 | Boone County Raceway - Albion, NE Doc Palmer Memorial Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Allen Zimmerman (Street Stocks) | 6th | - | - | 13th |
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| 6/5/2021 | Off Road Speedway - Norfolk, NE MSTS Western Swing at Off Road Speedway 360 Sprints - Winged: Midwest Sprint Touring Series Hobby Stocks, Stock Cars, Dirt Late Models | Results | | Allen Zimmerman (Stock Cars) | 4th | - | - | 12th |
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| 6/6/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds, Vintage Modifieds | Results | | Allen Zimmerman (Stock Cars) | 3rd | - | - | 2nd |
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| 6/10/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 5th | - | - | 8th |
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| 6/11/2021 | Boone County Raceway - Albion, NE Firemen Appreciation Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Allen Zimmerman (Street Stocks) | 5th | - | - | 9th |
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| 6/12/2021 | Lincoln County Raceway - North Platte, NE Summer Sizzler Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Allen Zimmerman (Stock Cars) | - | - | - | 12th |
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| 6/13/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds, Vintage Full Body Stock Cars | Results | | Allen Zimmerman (Stock Cars) | 1st | - | - | 3rd |
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| 6/17/2021 | US 30 Speedway - Columbus, NE Ladies Night IMCA Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 2nd | - | - | 6th (DNF) |
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| 6/18/2021 | Boone County Raceway - Albion, NE Alumni Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Allen Zimmerman (Street Stocks) | 4th | - | - | 10th |
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| 6/19/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Mini Sprints Hobby Stocks, Stock Cars, Winged A-Class, B Modifieds, Dirt Late Models | Results | | Allen Zimmerman (Stock Cars) | 5th | - | - | 12th |
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| 6/20/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | 4th | - | - | 3rd |
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| 6/27/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | 3rd | - | - | 4th |
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| 7/1/2021 | US 30 Speedway - Columbus, NE Racesaver IMCA Sprint Cars IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA RaceSaver Sprint Car | Results | | Allen Zimmerman (IMCA Stock Car) | 5th | - | - | 12th |
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| 7/2/2021 | Boone County Raceway - Albion, NE Boone County Challenge Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Allen Zimmerman (Street Stocks) | 6th | - | - | 8th |
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| 7/3/2021 | Lincoln County Raceway - North Platte, NE Fred Beardsley Memorial Race Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Allen Zimmerman (Stock Cars) | - | - | - | 14th |
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| 7/4/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | 2nd | - | - | 4th |
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| 7/8/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 5th | - | - | 12th |
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| 7/9/2021 | Off Road Speedway - Norfolk, NE Regular Race Night with Draw/Redraw Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Allen Zimmerman (Stock Cars) | 5th | - | - | 13th |
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| 7/11/2021 | Boone County Raceway - Albion, NE Boone County Raceway - WEST Dirt Super Late Models: SLMR Late Model Series Hobby Stocks, Street Stocks | Results | | Allen Zimmerman (Street Stocks) | 6th | - | 7th | 18th |
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| 7/15/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 7th | - | - | 12th |
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| 7/16/2021 | Boone County Raceway - Albion, NE Alan Rasmussen Tribute/Fan Appreciation Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models, Vintage Full Body Stock Cars, Vintage Modifieds | Results | | Allen Zimmerman (Street Stocks) | 7th | - | - | 11th |
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| 7/17/2021 | Lincoln County Raceway - North Platte, NE Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Non-Winged Sprints, Sport Compact | Results | | Allen Zimmerman (Stock Cars) | 5th | - | - | 11th |
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| 7/18/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | DNS | - | - | 4th |
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| 7/25/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds, Vintage Modifieds | Results | | Allen Zimmerman (Stock Cars) | 1st | - | - | 4th |
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| 7/29/2021 | US 30 Speedway - Columbus, NE KIDS NIGHT IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 6th | - | - | 13th |
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| 7/30/2021 | Boone County Raceway - Albion, NE Corn Growers Association Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Allen Zimmerman (Street Stocks) | 6th | - | - | 8th |
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| 7/31/2021 | Off Road Speedway - Norfolk, NE Regular Race Night Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Allen Zimmerman (Stock Cars) | 7th | - | - | 11th |
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| 8/1/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | 1st | - | - | 2nd |
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| 8/5/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 6th | - | - | 13th |
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| 8/6/2021 | Boone County Raceway - Albion, NE Kids Coin/Candy Toss Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Allen Zimmerman (Street Stocks) | 6th | - | - | 8th |
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| 8/7/2021 | Lincoln County Raceway - North Platte, NE Memorial Day Makeup Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | 4th | - | - | 7th |
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| 8/8/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | 5th | - | - | 4th |
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| 8/12/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 5th | - | - | 10th |
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| 8/13/2021 | Boone County Raceway - Albion, NE Championship Night Hobby Stocks, B Modifieds, Street Stocks, Dirt Late Models | Results | | Allen Zimmerman (Street Stocks) | DNS | - | - | 8th |
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| 8/14/2021 | Off Road Speedway - Norfolk, NE Kids Night-Race Car Rides Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models | Results | | Allen Zimmerman (Stock Cars) | 2nd | - | - | 16th |
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| 8/15/2021 | Stuart Raceway - Stuart, NE 305 Sprints - Winged, Hobby Stocks, Stock Cars, Restricted 'A' Class, Winged A-Class, Stock Non-Wing, B Modifieds | Results | | Allen Zimmerman (Stock Cars) | 2nd | - | - | 5th |
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| 8/19/2021 | US 30 Speedway - Columbus, NE Weekly Racing IMCA Late Models, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 6th | - | - | 8th |
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| 8/22/2021 | Dawson County Raceway - Lexington, NE Jackie Rowan Shelter Insurance Night at the Races! Mod Lites will be on hand! Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Allen Zimmerman (IMCA Stock Car) | 6th | - | - | DNS |
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| 8/26/2021 | US 30 Speedway - Columbus, NE Championship Night IMCA Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 4th | - | - | 6th |
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| 8/31/2021 | Thayer County Speedway - Deshler, NE FloRacing Summer Speedweek Presented by Herbster Angus Farms IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 6th | - | 10th | - |
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| 9/2/2021 | US 30 Speedway - Columbus, NE Dirt Crown IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | - | - | - | - |
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| 9/4/2021 | Boone Speedway - Boone, IA Wild Rose Casino Prelude to the Super Nationals IMCA Modified, IMCA Stock Car, Pro Dwarf, IMCA Mod Lite | Results | | Allen Zimmerman (IMCA Stock Car) | 7th | - | DNS | - |
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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 | | Allen Zimmerman (IMCA Stock Car) | 8th | - | - | - |
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| 9/9/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s Sportsmans, Midwest Modifieds, Vintage Full Body Stock Cars, IMCA Modified, IMCA Stock Car | Results | | Allen Zimmerman (Vintage Full Body Stock Cars) | 9th | - | - | - | | Allen Zimmerman (IMCA Stock Car) | 9th | - | - | - |
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| 9/10/2021 | Boone Speedway - Boone, IA 2021 IMCA Speedway Motors Super Nationals Fueled by Casey’s Generic 2, IMCA Modified, IMCA Stock Car | Results | | Allen Zimmerman (IMCA Stock Car) | 10th | - | - | - |
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| 9/17/2021 | US 30 Speedway - Columbus, NE 25th Annual Abe Lincoln Memorial Vintage Full Body Stock Cars, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA RaceSaver Sprint Car | Results | | Allen Zimmerman (IMCA Stock Car) | 5th | - | 9th | - |
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| 9/18/2021 | US 30 Speedway - Columbus, NE 25th Annual Abe Lincoln Memorial Vintage Modifieds, IMCA Late Models, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Allen Zimmerman (IMCA Stock Car) | 8th | - | 11th | - |
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