The wizard’s horse in J.R.R. Tolkien’s The Lord of the Rings is Shadowfax.
Shadowfax is a magnificent horse of Rohan and is described as the greatest of the Mark’s horses. He belongs to Théoden, King of Rohan, before being given to Gandalf. The horse can run extraordinarily fast and understands human speech, although Tolkien presents him as a living animal rather than a speaking character.
Gandalf rides Shadowfax during crucial journeys, including the rapid ride from Rohan to Minas Tirith. The horse’s speed helps Gandalf travel across Middle-earth when urgent news must be delivered or allies must be gathered.
Shadowfax is sometimes confused with horses from Tolkien’s other stories or with horses in Peter Jackson’s film adaptations. Brego is associated with Aragorn in the films, while Asfaloth carries Glorfindel’s horse in the book’s account of the escape toward Rivendell. Shadowfax specifically belongs to Gandalf’s story.