My Little Pony Friendship is Magic-Season 1 Episode 13 Fall Weather Friends from dailymotion by MyFlutterSparkle
related video : My Little Pony: Friendship Is Magic - Season 1, Episode 6 - Boast Busters
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After "Applejack beats Rainbow Dash in a game of horseshoes", the Pegasus becomes indignant and challenges "Applejack" to a series of physical challenges to prove "who is the more athletic pony". When "Rainbow Dash" is accused of cheating by using her wings, Applejack challenges her to participate in the "Running of the Leaves", an "annual marathon", without using her wings.