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| 5/15/2020 | Rapid Speedway - Rock Rapids, IA Weekly Racing Series DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 6th (DNF) | - | - | 9th |
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| 5/22/2020 | Rapid Speedway - Rock Rapids, IA Weekly Racing Series USRA Stock Cars: USRA Ironman DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks | Results | | Darrin Korthals (USRA Stock Cars) | 2nd | - | - | 6th |
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| 5/29/2020 | Rapid Speedway - Rock Rapids, IA Weekly Racing Series DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | DNS | - | - | DNS |
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| 6/5/2020 | Rapid Speedway - Rock Rapids, IA Hobby Stock Special with our Weekly Racing Series DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 2nd | - | - | 10th |
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| 6/12/2020 | Rapid Speedway - Rock Rapids, IA Mark Lloyd Memorial DIRTcar Late Models, DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 1st | - | - | 2nd |
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| 6/16/2020 | Stuart Speedway - Stuart, IA USMTS Modifieds A Modifieds: USMTS - United States Modified Touring Series USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Darrin Korthals (USRA Stock Cars) | 1st | - | - | 18th (DNF) |
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| 6/19/2020 | Rapid Speedway - Rock Rapids, IA USMTS A Modifieds: USMTS - United States Modified Touring Series DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 3rd | - | - | 2nd |
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| 6/26/2020 | Rapid Speedway - Rock Rapids, IA Weekly Racing Series + Tri-State Late Models Dirt Late Models: Tri-State Late Models DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 2nd | - | - | 21st (DNF) |
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| 7/10/2020 | Rapid Speedway - Rock Rapids, IA 360 Sprints - Winged, DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 1st | - | - | 1st |
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| 7/11/2020 | Rapid Speedway - Rock Rapids, IA Weekly Racing Series + Heartland Steel 305 Sprint Cars DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, IMCA RaceSaver Sprint Car | Results | | Darrin Korthals (USRA Stock Cars) | 3rd | - | - | 3rd |
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| 7/17/2020 | Rapid Speedway - Rock Rapids, IA B-Mod Speical with our Weekly Racing Series DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 2nd | - | - | 7th |
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| 7/24/2020 | Rapid Speedway - Rock Rapids, IA Weekly Racing Series DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 1st | - | - | 5th |
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| 7/31/2020 | Rapid Speedway - Rock Rapids, IA Weekly Racing Series + A-Mods DIRTcar Sportsmans, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 1st | - | - | 2nd |
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| 8/7/2020 | Rapid Speedway - Rock Rapids, IA Dave Mulder Memorial DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 1st | - | - | 2nd |
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| 8/14/2020 | Rapid Speedway - Rock Rapids, IA Sportsmans Special with our Weekly Racing Series DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 3rd | - | - | 3rd |
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| 8/21/2020 | Rapid Speedway - Rock Rapids, IA Bob DeBoer Stock Car Special + MSTS 360 Sprints 360 Sprints - Winged: Midwest Power Series 305 Sprints - Winged, DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 2nd | - | - | 3rd |
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| 8/28/2020 | Rapid Speedway - Rock Rapids, IA Weekly Racing Series + Tri State Late Models Dirt Late Models: Tri-State Late Models DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 3rd | - | - | 3rd |
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| 8/30/2020 | Mason City Motor Speedway - Mason City, IA Season Championship 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Darrin Korthals (USRA Stock Cars) | - | - | - | 5th |
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| 8/31/2020 | Mason City Motor Speedway - Mason City, IA Double Feature From 8-30-2020 USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Darrin Korthals (USRA Stock Cars) | - | - | - | 5th |
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| 9/4/2020 | Rapid Speedway - Rock Rapids, IA Season Championship Night DIRTcar Sportsmans, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 2nd | - | - | 2nd |
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| 9/5/2020 | Deer Creek Speedway - Spring Valley, MN A Modifieds: USMTS - United States Modified Touring Series USRA B-Mods, USRA Stock Cars, IMCA Modified, WISSOTA Street Stock | Results | | Darrin Korthals (USRA Stock Cars) | 5th | - | - | 9th |
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| 9/19/2020 | Deer Creek Speedway - Spring Valley, MN Stock Car Nationals USRA Hobby Stocks, USRA Stock Cars | Results | | Darrin Korthals (USRA Stock Cars) | 5th | - | 3rd | 26th (DNF) |
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| 9/26/2020 | Rapid Speedway - Rock Rapids, IA Rapid Nationals Dirt Late Models: Tri-State Late Models 360 Sprints - Winged, 305 Sprints - Winged, USRA Hobby Stocks, USRA Stock Cars, IMCA RaceSaver Sprint Car | Results | | Darrin Korthals (USRA Stock Cars) | 1st | - | - | 1st |
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| 10/1/2020 | Hamilton County Speedway - Webster City, IA 7th Annual Summit USRA Nationals Powered by MyRacePass - Night #1 USRA Stock Cars: USRA Nationals Dirt Super Late Models, USRA B-Mods, USRA Modifieds, USRA Late Models, USRA Hobby Stocks | Results | | Darrin Korthals (USRA Stock Cars) | 4th | - | - | 17th |
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| 10/2/2020 | Hamilton County Speedway - Webster City, IA 7th Annual Summit USRA Nationals Powered by MyRacePass - Night #2 USRA Stock Cars: USRA Nationals Dirt Super Late Models, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Tuners | Results | | Darrin Korthals (USRA Stock Cars) | 9th (DNF) | - | DNS | - |
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| 10/3/2020 | Hamilton County Speedway - Webster City, IA 7th Annual Summit USRA Nationals Powered by MyRacePass - Night #3 USRA Stock Cars: USRA Nationals Dirt Super Late Models, USRA B-Mods, USRA Modifieds, USRA Late Models, USRA Hobby Stocks, USRA Tuners | Results | | Darrin Korthals (USRA Stock Cars) | DNS | - | DNS | - |
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