Gandalf riding Shadowfax in the New Line film
Shadowfax was a beautiful white horse of the mearas who was the lord of all horses. On September 21, 3018, Gandalf found Shadowfax running in the wild. They met and became friends. Gandalf told him to take him to the Shire. Shadowfax was so fast, he rode there in 6 days. In the Ettenmoors, Shadowfax was released. He swiftly returned to Rohan and continued running in the fields. On February 30, 3019, Gandalf summoned him to Fangorn. He met up with the horses Arod and Hasufel. The three answered Gandalf. Shadowfax rode Gandalf to Edoras. They released Theoden from Saruman's spell and then gathered Rohan's forces to defeat Saruman at Helm's Deep. Shadowfax then rode Pippin and Gandalf to Minas Tirith, where he went into the stables of the 6th level. He was released during the Battle of Pelennor Fields to help Gandalf oppose the Witch-King of Angmar, who had decided enter the city and kill people. After the War, Gandalf and Shadowfax went to the Undying Lands together.