Princess Snowbelle and the Snow Games by Libby Frost
Far away in the glistening land of Frostovia, Snowbelle and her brothers are preparing for the Snow Games contest. Snowbelle's best friend, Sparkleshine, and her brothers are competing too. As the first race starts, competition is fierce, but when Snowbelle and Sparkleshine's horse race goes awry, Sparkleshine learns that winning is not the most important thing. An uplifting and charming tale of teamwork and friendship in a winter wonderland.