That's why Erin almost tripped over her own hooves in shock as Applejack caught up to her and tipped her a wink. Rainbow Dash's prismatic mane could be seen streaming on the other side of the farmpony's head. Her previous grin was replaced by a frown of determination as Erin turned her attention back to the race, pushing harder than ever. Her breathing was labored now, coming more ragged and strained, and she felt sweat pouring down her back and across her flank.   