If the player presses A to dismount 1 frame after letting go of R, Link will dismount Epona while still moving and slide on the ground for a moment before gaining control again. This can be used to cross voids, as Epona won't fall during the dismount animation, or can be combined with a Brakeslide to achieve high movement speeds.
If an Epona Slide begins while Epona is on land, Epona won't fall while Link dismounts, even if she passes over a void during the dismount. Holding forward on the control stick out of the Epona Slide will make Link hop forward and reach the far side of the Gorge.