In what race was a Clay County, Kansas native world leader in 1970?
Ken Swenson: Kenneth Lloyd "Ken" Swenson (born April 18, 1948 in Clay Center, Kansas) is a retired middle-distance runner from the United States. Ken Swenson:  Swenson was the world leader at 800 meters in 1970 and competed in the 1972 Summer Olympics in Munich.
i don't know