Highlights from the 11th Annual USMTS North Iowa Nationals featuring the Summit USMTS National Championship presented by RacinDirt at the Mason City Motor Speedway in Mason City, Iowa, on Friday July 19, 2024.

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The United States Modified Touring Series is the most popular dirt modified racing series in the world. Featuring the most talented drivers in North America, the fan-friendly format and exciting show adds up to a loyal fan base and capacity crowds. When it comes to dirt modified racing, the USMTS has no equal. 🔥

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