Challenge of the Americas!

The West's Premier National Karting Series

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  • 2025 Schedule
    • January 31-February 2, 2025 Musselman Honda Circuit, Tucson, AZ.
      • Tucson 2025 Event Info
    • March 7-9, 2025 K1 Circuit, Winchester, CA.
      • K1 Circuit 2025 Event Info
    • April 25-27, 2025 Sonoma Raceway, Sonoma, CA.
      • 2025 Sonoma Event Info
      • Registration
    • June 13-15, 2025 Utah Motorsports Campus, Grantsville, UT.
      • 2025 Utah Event Info
  • Registration
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  • Rules
    • NKA Rule Book
      • 2024 NKA Supplemental (Updated 1.31.2025)
    • Supplemental Regulations V2024.1
    • Event Format
    • Pre-Tech and Declaration Procedures
    • 2025 Fuel and Oil
    • Points Structure
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    • Happy Hour With Howden 11/24/2020
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2017 Challenge of the Americas Sporting Regulations 2017 Challenge of the Americas Technical Regulations 2017 Challenge of the Americas Technical Regulations (Mini/Micro MAX)
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