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  • 2025 IKF Sprint Grand Nationals

    K1 Circuit 32240 GRAND AVE., Winchester, CA, United States

    The ‘Duffy’ is the most prestigious trophy in grassroots kart racing, and once a year the International Kart Federation holds its annual IKF Sprint GrandNationals. The names who call…

    $649

  • RMC America’s Trophy – Rounds 1 & 2

    Musselman Honda Circuit 11800 S Harrison Rd., Tucson, AZ, United States

    Rotax MAX Challenge Classes 125 Micro MAX 125 Mini MAX 125 Junior MAX 125 Senior MAX 125 MAX Masters FZ Shifter Classes FZ85 Junior FZ125 Senior

    TBD
  • Factory Karts' Billy Musgrave celebrating his fifth SuperNationals win (Photo: EKN - Mattia Marmo)

    SKUSA 2026 Pro Tour WinterNationals

    Musselman Honda Circuit 11800 S Harrison Rd., Tucson, AZ, United States

    The 2026 SKUSA ProTour Winter Nationals will take place at the Musselman Honda Circuit in Tucson, Arizona March 27-29, 2026. Join the best drivers from across the United States…

    TBD