You are correct however, I wonder how much more balanced the results would be across the races (nationalities), if there was the same number of Orientals, Caucasions, Negros, Indiginous North American, South Pacific Indiginous people (Maori et al) and Indian (India and area as well as Persians) and they all ran equally in numbers.
The reason why I ask is because there are only blacks winning. Now athletes start to get funneled into sports that they appear to be suited for in some countries fairly early. Why are there so many good soccer players of all races, white, Brazilians, blacks et al?
Now journalists and athletes document the participation numbers of runners in Kenya and they are huge. Kids running to school or walking and running, to and from et al. Also, at the high end, huge groups of sub-28 minute runners all together of the likes that you do not see in other countries.
If it is strictly a race thing, are Ryan Hall, Paula Radcliffe, Seb Coe, Christophe Lemaitre all outliers? How can you have outliers when a smaller percentage of your population or a smaller percentage of your athletic population even takes on the sport at all?
How can a caucasion with promise of a career have the same desire as an East African or Jamaican when they have nothing. What is that saying, "fear the man with nothing to lose". Something like that.
That can be answered with funneling to sports that the athlete can be good at early. And can be answered with the affordability thing too. Non blacks can afford to cycle, ski et al. They also participate in those sports to a higher degree than they run, at a serious level.
I am in no way suggesting that whites could dominate blacks in running, because the proof to date, as far as we know it, is opposite of that however, I am asking, if soccer for example is one of the only sports that is well represented across the racial spectrum and happens to have a broad range of representation because of that, why can't all other sports?
Soccer requires agility, fitness, speed, coordination, skill and other attributes. It is close to a pure sport of straight up running and requires little to no money to play. Additionally and perhaps most importantly, it is played world-wide by every spectrum of all the races.