A bicycle ski attachment assembly provides a ski vehicle that positions a rider similar to being on a conventional bicycle including similar rider height and movable pedals. The assembly includes an elongated front ski and an elongated rear ski. A front ski support has a front hub. A front axle assembly is coupled to the front hub and is configured for coupling to front forks of a bicycle. A rear ski support has a rear hub. A rear axle assembly is coupled to the rear hub and is configured for coupling to rear dropouts of the bicycle. A chain pulley is coupled to the rear axle assembly. The chain pulley is configured for receiving a chain from the bicycle under tension whereby the chain pulley provides resistance to pedaling pedals on the bicycle.