Wind Running is a star within the Constellation The Lover in Elder Scrolls Online.
This was added in Update 6 with the Champion System. It Increases your Movement Speed by 2%. This applies to all types of movement. Also increases Health and Magicka Regeneration by 10% while sprinting. 120 points in the Lover Constellation are required to unlock it. Once unlocked the player will acquire this bonus automatically and across all characters on their account.