New formula in 2025! Marathon White Block is a hard and extra durable glide wax for long distance racing. It also is a great training and base wax. The Marathon White Block was developed especially for longer distances in new and clean snow. Works great in warmer conditions, but can also be used in colder weather as well, offering good glide. Can be applied using a waxing iron or a roto wool brush. Marathon waxes can be used as a stand alone race wax or as a base for liquids or wool-applied top coats.