In fact, Entine reports that one tribe in Africa is superior to all others in producing top long-distance runners. It is not racist to see that the best sprinters in the world are from West Africa or trace their ancestry to West Africa, and that they will dominate. Neither is it racist to note that the world's biggest noses emerge from Armenia. Entine investigates the science of these differences. They are not black and white.
Skin color is a small difference.
Most black skinned population groups have no special athletic abilities. It is what is under the skin that defines athletic ability. I have not space here to reproduce Entine's arguments. So after my vacation of reading and running I came back and talked about Taboo with one of GBTC's 800-meter runners, a white guy. He looked at me as if I had just wasted my breath.