A locomotion apparatus that has a base that secures a skateboard platform to a snow ski as a combination. The base is secured into position by bindings of a ski. A brake mechanism is provided that has a brake seat, a lever arm and a spring arm that cooperate with each other to enable the brake mechanism to move between a deployed brake position, at which the combination brakes to prevent its locomotion, and a non-deployed brake position, at which the locomotion is enabled.