At first glance the annual Man vs. Horse Marathon, set for June 9 in Wales, seems like a joke sport brought to us by the same brilliant minds behind dwarf tossing and gravy wrestling. … For the next 24 years, he found himself losing the argument as riders on horseback left human runners behind. But then it finally happened—in 2004 a British man named Huw Lobb won.
Sounds mildly interesting if fundamentally stupid. But no.
… Our long-striding legs are packed with springlike tendons, muscles, and ligaments that enable us to briefly store elastic energy as we come down on a foot and then recoil to help propel us forward. Tellingly, the most important of these springs, our big, strong Achilles tendons, aren’t found in early human precursors such as Australopithecus—it seems that the high-end tendons evolved along with other adaptations for distance running in the genus Homo when it appeared on the African savannah about 2 million years ago. … But what most sets us apart as runners is that we’re really cool—we naked apes are champion sweaters and can dissipate body heat faster than any other large mammal. … Even run-of-the-mill joggers typically do between 3.2 and 4.2 meters per second, which means they can outrun dogs at distances greater than two kilometers.
The article goes on to voice speculation about our heritage and biology which has some interest to modern homo lazyboyus.