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| 5/1/2021 | Deer Creek Speedway - Spring Valley, MN Points Race USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tianna Mithun (WISSOTA Midwest Mods) | 4th | - | - | 13th |
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| 5/15/2021 | Deer Creek Speedway - Spring Valley, MN Points Race A Modifieds, USRA B-Mods, USRA Modifieds, USRA Late Models, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tianna Mithun (WISSOTA Midwest Mods) | 1st | - | - | 7th |
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| 5/22/2021 | Deer Creek Speedway - Spring Valley, MN Points Race USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tianna Mithun (WISSOTA Midwest Mods) | 3rd | - | - | 20th (DNF) |
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| 6/13/2021 | Mason City Motor Speedway - Mason City, IA Season Opener USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Tianna Mithun (USRA B-Mods) | 7th | - | 5th | - |
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| 7/2/2021 | Mississippi Thunder Speedway - Fountain City, WI Karl Fenske Memorial Dirt Late Models, Hornets, USRA B-Mods, USRA Modifieds, USRA Late Models, USRA Hobby Stocks | Results | | Tianna Mithun (USRA B-Mods) | 6th | - | - | 17th |
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| 7/3/2021 | Deer Creek Speedway - Spring Valley, MN Fireworks - Points Race USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tianna Mithun (USRA B-Mods) | 1st | - | - | 7th | | Tianna Mithun (WISSOTA Midwest Mods) | - | - | - | - |
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| 7/10/2021 | Deer Creek Speedway - Spring Valley, MN Points Race USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tianna Mithun (USRA B-Mods) | 8th (DNF) | - | 11th (DNF) | - |
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| 7/17/2021 | Deer Creek Speedway - Spring Valley, MN Tasseldega Nights - Points Race - FREE Grandstands USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tianna Mithun (USRA B-Mods) | 3rd | - | - | 10th |
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| 7/18/2021 | Mason City Motor Speedway - Mason City, IA United States Modified Touring Series fueled by Casey's A Modifieds: USMTS - United States Modified Touring Series 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars | Results | | Tianna Mithun (USRA B-Mods) | 1st | - | - | 7th |
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| 7/24/2021 | Deer Creek Speedway - Spring Valley, MN Points Race USRA B-Mods, USRA Modifieds, USRA Late Models, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tianna Mithun (USRA B-Mods) | 6th | - | 3rd | 13th |
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| 7/25/2021 | Mason City Motor Speedway - Mason City, IA Kids Night 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars | Results | | Tianna Mithun (USRA B-Mods) | 1st | - | - | 9th |
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| 7/31/2021 | Deer Creek Speedway - Spring Valley, MN Points Race USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Rain Out |
| 8/14/2021 | Deer Creek Speedway - Spring Valley, MN Veterans Night- Points Race USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tianna Mithun (USRA B-Mods) | 5th | - | - | 18th |
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| 8/15/2021 | Mason City Motor Speedway - Mason City, IA B-Mod Challenge Presented by Kabrick Distributing 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars | Results | | Tianna Mithun (USRA B-Mods) | 5th | - | 7th | - |
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| 8/20/2021 | Chateau Speedway - Lansing, MN Kids Night-Car Rides and Bicycle give aways USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Hornet | Results | | Tianna Mithun (USRA B-Mods) | 5th | - | - | - |
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| 8/21/2021 | Deer Creek Speedway - Spring Valley, MN Points Race USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tianna Mithun (USRA B-Mods) | 2nd | - | - | 8th |
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| 8/28/2021 | Hamilton County Speedway - Webster City, IA Karl Chevrolet Driver Appreciation Night A Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Tianna Mithun (USRA B-Mods) | 3rd | - | - | 15th (DNF) |
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| 9/4/2021 | Deer Creek Speedway - Spring Valley, MN 16th Annual USMTS Labor Day Duel A Modifieds: USMTS - United States Modified Touring Series USRA B-Mods, USRA Late Models, USRA Stock Cars | Results | | Tianna Mithun (USRA B-Mods) | 4th | - | 1st | 12th |
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| 9/5/2021 | Fayette County Speedway - West Union, IA USMTS A Modifieds: USMTS - United States Modified Touring Series USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars | Results | | Tianna Mithun (USRA B-Mods) | 8th (DNF) | - | DNS | - |
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| 9/10/2021 | Chateau Speedway - Lansing, MN Spirit of 83 Rescheduled Event Night USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Hornet | Results | | Tianna Mithun (USRA B-Mods) | 6th | - | 3rd | 13th |
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| 9/11/2021 | Chateau Speedway - Lansing, MN National Points Special USRA B-Mods, USRA Modifieds, WISSOTA Midwest Mods, WISSOTA Pure Stock, WISSOTA Street Stock, WISSOTA Hornet | Results | | Tianna Mithun (USRA B-Mods) | 1st | - | - | 17th (DNF) |
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| 9/23/2021 | Deer Creek Speedway - Spring Valley, MN 23rd Annual Featherlite Fall Jamboree USRA B-Mods, USRA Modifieds | Results | | Tianna Mithun (USRA B-Mods) | 3rd | - | - | 28th |
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| 9/24/2021 | Deer Creek Speedway - Spring Valley, MN 23rd Annual Featherlite Fall Jamboree A Modifieds: USMTS - United States Modified Touring Series USRA B-Mods | Results | | Tianna Mithun (USRA B-Mods) | 8th | - | 4th | 23rd |
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| 9/25/2021 | Deer Creek Speedway - Spring Valley, MN 23rd Annual Featherlite Fall Jamboree A Modifieds: USMTS - United States Modified Touring Series USRA B-Mods | Results | | Tianna Mithun (USRA B-Mods) | 5th | - | 4th | 20th |
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| 10/6/2021 | Lucas Oil Speedway - Wheatland, MO Practice Night USRA Stock Cars: USRA Nationals USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Tuners | Results | | Tianna Mithun (USRA B-Mods) | - | - | - | - |
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| 10/7/2021 | Lucas Oil Speedway - Wheatland, MO 8th Annual Summit USRA Nationals Presented by MyRacePass USRA Stock Cars: USRA Nationals USRA B-Mods, USRA Modifieds, USRA Hobby Stocks | Results | | Tianna Mithun (USRA B-Mods) | 6th | - | 8th | - |
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| 10/8/2021 | Lucas Oil Speedway - Wheatland, MO 8th Annual Summit USRA Nationals Presented by MyRacePass USRA Stock Cars: USRA Nationals USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Tuners | Results | | Tianna Mithun (USRA B-Mods) | 3rd | - | 5th | 20th |
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| 10/9/2021 | Lucas Oil Speedway - Wheatland, MO 8th Annual Summit USRA Nationals Presented by MyRacePass USRA Stock Cars: USRA Nationals USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Tuners | Results | | Tianna Mithun (USRA B-Mods) | - | - | 6th | - |
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| 10/22/2021 | Ogilvie Raceway - Ogilvie, MN Topless Nationals Night One A Modifieds, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds, Super Stocks | Results | | Tianna Mithun (B Modifieds) | 5th | - | - | - |
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| 10/23/2021 | Ogilvie Raceway - Ogilvie, MN Topless Nationals Night Two A Modifieds, Winged A-Class, B Modifieds, Street Stocks, Dirt 4 cyl Modifieds, Super Stocks | Results | | Tianna Mithun (B Modifieds) | - | - | 10th (DNF) | - |
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