Most people in road racing believe Kenyan women will also be dominant within two years.
There is general knowledge about contraception among young Kenyan women, but little practical information.
Statistics suggest that attitudes of Kenyan women toward family planning are changing.
That was a mild surprise because Kenyan women had won here the past two years and seemed likely to win again.
Population experts said the decline in the number of children Kenyan women are having was attributable to several factors.
Recent results include evidence that the average Kenyan woman now has 6.5 children compared with 8.2 children 12 years ago.
In one case, they shot dead two Kenyan women in their sleep.
She was the first Kenyan woman to serve as a cabinet minister.
Now she wants to be like the Kenyan woman.
Kenyan women, held back by cultural tradition, have come late to competition.