Doug Nelson of Colorado Springs, Colo., running...

Doug Nelson of Colorado Springs, Colo., running only his third marathon since 1982, won the San Diego Marathon and qualified for the U.S. Olympic trials with a time of 2 hours 18 minutes 52 seconds. The qualifying mark is 2:20.

Debbi Waldear, 37, of Kirkwood, Calif., won the women’s race with a time of 2:50:49. Waldear, who will compete in the U.S. Olympic cross-country skiing trials in January, missed qualifying for the marathon trials by 50 seconds.