redriverronin wrote:
humans are the best long distance animals on the planet.
That's true, and in fact it's possible for a man on foot to eventually run down a horse. The Plains Indians supposedly used to do it all the time. It's possible because, as you point out, humans are very good at long distance running and horses aren't, for two reasons: grass is not a good concentrated energy food, and horses have a relatively inefficient metabolism besides. That's why horses must spend much of their day grazing. Except they can't if they're being pursued, so eventually they simply wear out and the man on foot is able to catch up.
Sorry for getting off-topic ...