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| 1/6/2021 | Cocopah Speedway - Somerton, AZ Cocopah Speedway 2021 Winter Nationals presented by Yuma Insurance IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Pete Terwilleger (IMCA Hobby Stock) | 7th | - | 3rd | 20th |
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| 1/7/2021 | Cocopah Speedway - Somerton, AZ Cocopah Speedway 2021 Winter Nationals presented by Yuma Insurance IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Pete Terwilleger (IMCA Hobby Stock) | 4th | - | - | 18th |
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| 1/8/2021 | Cocopah Speedway - Somerton, AZ Cocopah Speedway 2021 Winter Nationals presented by Yuma Insurance IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Pete Terwilleger (IMCA Hobby Stock) | 9th | - | - | 19th |
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| 1/9/2021 | Cocopah Speedway - Somerton, AZ Cocopah Speedway 2021 Winter Nationals presented by Yuma Insurance Kid Karts Dirt, Junior Sportsman Dirt Karts, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Pete Terwilleger (IMCA Hobby Stock) | 4th | - | - | 19th (DNF) |
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| 1/14/2021 | Cocopah Speedway - Somerton, AZ Cocopah Speedway 2021 Winter Nationals presented by Yuma Insurance IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Pete Terwilleger (IMCA Hobby Stock) | 5th | - | - | 10th |
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| 1/15/2021 | Cocopah Speedway - Somerton, AZ Cocopah Speedway 2021 Winter Nationals presented by Yuma Insurance IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Pete Terwilleger (IMCA Hobby Stock) | 3rd | - | - | 11th |
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| 1/16/2021 | Cocopah Speedway - Somerton, AZ Cocopah Speedway 2021 Winter Nationals presented by Yuma Insurance Kid Karts Dirt, Junior Sportsman Dirt Karts, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Pete Terwilleger (IMCA Hobby Stock) | 6th | - | - | 7th |
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| 4/9/2021 | Desert Thunder Raceway - Price, UT Season Opener Sportsmans, Dirt Late Models, Hornets, Limited Sport Mod, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, Speedstr | Results | | Pete Terwilleger (IMCA Hobby Stock) | 10th (DNF) | - | - | 3rd |
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| 4/10/2021 | Desert Thunder Raceway - Price, UT Season Opener Sportsmans, Dirt Late Models, Hornets, Limited Sport Mod, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, Speedstr | Results | | Pete Terwilleger (IMCA Hobby Stock) | 2nd | - | - | 3rd |
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| 4/23/2021 | Desert Thunder Raceway - Price, UT Sportsmans, Dirt Late Models, Hornets, Limited Sport Mod, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Pete Terwilleger (IMCA Hobby Stock) | 3rd | - | - | 2nd |
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| 4/24/2021 | Desert Thunder Raceway - Price, UT Sportsmans, Dirt Late Models, Hornets, Limited Sport Mod, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Pete Terwilleger (IMCA Hobby Stock) | 8th (DNF) | - | - | 4th |
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| 5/7/2021 | Desert Thunder Raceway - Price, UT Sportsmans, Hornets, Limited Sport Mod, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, Speedstr | Results | | Pete Terwilleger (IMCA Hobby Stock) | 2nd | - | - | 7th (DNF) |
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| 5/8/2021 | Desert Thunder Raceway - Price, UT Sportsmans, Hornets, Limited Sport Mod, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, Speedstr | Results | | Pete Terwilleger (IMCA Hobby Stock) | 2nd | - | - | 7th (DNF) |
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| 5/14/2021 | Desert Thunder Raceway - Price, UT Sportsmans, Hornets, Limited Sport Mod, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Pete Terwilleger (IMCA Hobby Stock) | 4th | - | - | 2nd |
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| 5/15/2021 | Desert Thunder Raceway - Price, UT Sportsmans, Hornets, Limited Sport Mod, Pure Stock, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Pete Terwilleger (IMCA Hobby Stock) | 2nd | - | - | 5th |
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| 7/16/2021 | Cortez Fairgrounds Speedway - Cortez, CO Dirty 30 IMCA Hobby Stock Challenge & Bomber Invasion Midgets, Factory Stocks, Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Pete Terwilleger (Hobby Stocks) | 2nd | - | - | 13th |
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| 7/17/2021 | Cortez Fairgrounds Speedway - Cortez, CO Dirty 30 IMCA Hobby Stock Challenge Midgets, Factory Stocks, Hobby Stocks, B Modifieds, Street Stocks, Hornets, 600cc Modifieds, Limited Sport Mod, Sport Compact, Mod Lites | Results | | Pete Terwilleger (Hobby Stocks) | 5th | - | - | 6th |
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