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There've been many bottlenecks in our history. How do we know that humans weren't hairless prior to 200,000 years ago?That's a good question. DNA shows that we are 700,000 years separated from Neanderthals who were arriving in Europe about the same time we were first appearing in South Africa after a 500,000 year separation. I wonder if Neanderthals had hair and how much? I also wonder if they were capable of mating with the humans who arrived in Eurasia later.

It is said that no land animal can outdistance a well-conditioned human.

A herd of horses, gazelle, etc; can outrun a tribe of humans for days but the persistent humans on the trail will eventually come up on a herd too exhausted to run and can pick off the weakest at will. I'm sure that played a big part in pre-modern evolution even with the questions of shoes, predators, and lack of home base. The problem of home base would be partially solved by running a herd into a valley or perhaps a beach peninsula (which would reduce problems with sore feet and predators).