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| 5/14/2021 | West Texas Raceway - Lubbock, TX SOUTHERN TOURING LATE MODEL SERIES Dirt Late Models: XR Southern Storm DIRTcar Factory Stock, Street Stocks, USRA Limited Mods, USRA Modifieds, USRA Stock Cars | Results | | Colton Horner (Dirt Late Models) | 1st | - | - | 12th |
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| 5/15/2021 | Route 66 Motor Speedway - Amarillo, TX STLMS Outlaw Late Models!! Dirt Late Models: XR Southern Storm Street Stocks, Economy Late Models, USRA Limited Mods, USRA Modifieds, USRA Tuners | Results | | Colton Horner (Dirt Late Models) | 2nd | - | - | 1st |
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| 5/30/2021 | Texana Raceway Park - Edna, TX Tony's Mobil Home Service Salute to the Troops Featuring the STLMS Late Models Dirt Late Models: XR Southern Storm Factory Stocks, A Modifieds, B Modifieds, Street Stocks, Dirt Cage Kart Junior 1, Flat Adult Clone, Dirt Pro Trucks, Limited Sport Mod, IMCA Mod Lite, Cage Jr. Predator, Cage Sr. Predator | Results | | Colton Horner (Dirt Late Models) | 3rd | - | - | 2nd |
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| 5/31/2021 | Texana Raceway Park - Edna, TX Operation Honor the Fallen Factory Stocks, A Modifieds, B Modifieds, Street Stocks, Dirt Late Models, Dirt Cage Kart Junior 1, Flat Adult Clone, Limited Sport Mod, IMCA Mod Lite, Cage Jr. Predator, Cage Sr. Predator | Results | | Colton Horner (Dirt Late Models) | 4th | - | - | DNS |
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| 7/16/2021 | Heart O' Texas Speedway - Waco, TX Regular Race Night - Lone Star Dwarf Cars Factory Stocks, Street Stocks, Dwarf, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Colton Horner (IMCA Modified) | 8th | - | - | 5th |
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| 7/17/2021 | Cotton Bowl Speedway - Paige, TX Summer Showdown Series 1 - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Colton Horner (IMCA Modified) | 3rd | - | - | 10th |
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| 7/24/2021 | Lawton Speedway - Lawton, OK USRA American Racer Modifed Series USRA Modifieds: USRA American Racer Modified Series A Modifieds, Pony Stock, USRA Limited Mods, USRA Tuners | Results | | Colton Horner (USRA Modifieds) | 4th | - | - | 5th |
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| 8/7/2021 | Hunt County Raceway - Greenville, TX Weekly Show, USRA Modifieds Stock Cars, Restricted 'A' Class, Winged A-Class, Super Stocks, USRA Limited Mods, USRA Modifieds, USRA Factory Stocks, USRA Tuners | Results | | Colton Horner (USRA Modifieds) | 8th | - | - | 12th |
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| 8/21/2021 | Hunt County Raceway - Greenville, TX American Racer Modified Series Restricted 'A' Class: NOW600 Restricted Micros Winged A-Class: NOW600 A-Class Micros USRA Modifieds: USRA American Racer Modified Series Stock Cars, Super Stocks, USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Colton Horner (USRA Modifieds) | 4th | - | 14th (DNF) | - |
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| 8/27/2021 | Ark-La-Tex Speedway - Vivian, LA USRA Modifieds: USRA American Racer Modified Series Factory Stocks, B Modifieds, Limited Modified, Dirt Crate Late Models | Results | | Colton Horner (USRA Modifieds) | 6th | - | 5th | 10th |
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| 8/28/2021 | Revolution Park - Monroe, LA USRA Modifieds: USRA American Racer Modified Series | Results | | Colton Horner (USRA Modifieds) | - | - | - | - |
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| 9/9/2021 | RPM Speedway - Crandall, TX Inaugural USMTS Event A Modifieds: USMTS - United States Modified Touring Series USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Colton Horner (A Modifieds) | 4th | - | 1st | 17th |
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| 9/10/2021 | Ark-La-Tex Speedway - Vivian, LA USMTS 9th Annual Cajun Clash A Modifieds: USMTS - United States Modified Touring Series Factory Stocks, B Modifieds, Limited Modified, Sport Compact | Results | | Colton Horner (A Modifieds) | 6th | - | 6th | - |
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| 9/11/2021 | Revolution Park - Monroe, LA Inaugural USMTS Event A Modifieds: USMTS - United States Modified Touring Series | Results | | Colton Horner (A Modifieds) | 7th | - | 6th | - |
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| 9/23/2021 | Deer Creek Speedway - Spring Valley, MN 23rd Annual Featherlite Fall Jamboree USRA B-Mods, USRA Modifieds | Results | | Colton Horner (USRA Modifieds) | 8th | - | 12th | - |
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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 | | Colton Horner (A Modifieds) | 8th | - | 10th | - |
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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 | | Colton Horner (A Modifieds) | 3rd | - | 10th | - |
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| 10/3/2021 | Mason City Motor Speedway - Mason City, IA Fall Frenzy USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Colton Horner (USRA Modifieds) | 1st | - | - | 9th |
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| 11/4/2021 | Boothill Speedway - Greenwood, LA Summit USRA Southern Nationals USRA Modifieds: USRA American Racer Modified Series USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Colton Horner (USRA Modifieds) | 5th | - | - | 17th |
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| 11/5/2021 | Boothill Speedway - Greenwood, LA Summit USRA Southern Nationals USRA Modifieds: USRA American Racer Modified Series USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Colton Horner (USRA Modifieds) | 8th | - | 10th | 16th |
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| 11/6/2021 | Boothill Speedway - Greenwood, LA Summit USRA Southern Nationals USRA Modifieds: USRA American Racer Modified Series USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Colton Horner (USRA Modifieds) | 7th | - | 9th | 21st |
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