Mark Plaatjes of Boulder, Colo., captured the Los Angeles Marathon on Sunday with a time of 2 hours, 10 minutes, 29 seconds.
Daniel Boltz of Switzerland finished second in 2:11:10.Cathy O'Brien of Durham, N.H., broke the women's record with a time of 2:29:38, her personal-best by 40 seconds. The previous record was 2:32:25 in 1990 by Julie Isphording of Cincinnati. Marcia Narloch of Brazil was second in 2:32:42.
Locally . . .