Clip of quote: Average foot speed over uneven ground, barring injury, is four miles an hour. Clip of quote: Average foot speed over uneven ground, barring injury, is four miles an hour. Yarn is the best way to find video clips by quote. Find the exact moment in a TV show, movie, or music video you want to share. Easily move forward or backward to get to the perfect spot. It's available on the web and also on Android and iOS.
Average foot speed over uneven ground, barring injury, is four miles an hour.
Average foot speed over uneven ground, barring injury, is four miles an hour.
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