Joan Benoit Samuelson speaks to the media at Nike Women's Marathon...

SAN FRANCISCO—Joan Benoit Samuelson, the winner of the first women’s marathon at the 1984 Olympics in Los Angeles, spoke to members of the media Friday in conjunction with Sunday’s Nike Women’s Marathon through the streets of San Francisco.Samuelson, who is qualified to run in April’s USA Olympic Marathon Trials in Boston was pleased that some 20000 women are entered to run Sunday’s marathon, and