The 2017 Mazda Raceway California 8 Hours was the first Mazda Raceway California 8 Hours race held on Mazda Raceway Laguna Seca on 15 October 2017. The race was contested with GT3-spec cars, GT4-spec cars and MARC cars. The race was organized by the Stéphane Ratel Organisation (SRO).
Class winners in bold.