A cart ski system for urging a cart along a granular support surface includes a cart that may be rolled along a support surface. The cart has a set of rear wheels and a set of front wheels. A pair of skis is provided and each of the wheels is positioned in a corresponding one of the skis. Each of the skis slides along the support surface when the support surface is comprised of a granular material thereby enhancing urging the cart along the granular material.