Shadowfax is a horse bred by the Rohirrim. He is one of the Maeras. Gandalf is the only rider that Shadowfax will have. After emerging from Fangorn Forest with Aragorn, Gimli and Legolas, Gandalf summons Shadowfax and rides him to Edoras. After Théoden decides to evacuate the inhabitants of Edoras to Helm's Deep, Gandalf decides to ride north. Just before they depart from the Edoras Stables, Gandalf tells Aragorn to look for him on the morning of the fifth day from then. Shadowfax bears Gandalf with great speed and carries Gandalf north from Edoras.