MIAMI — Former Dartmouth runner Christopher Zablocki of Essex, Connecticut won the damp, chilly Miami Marathon on Sunday with a time of 2 hours, 18 minutes, 15 seconds. Runner-up Hillary Too of Kenya finished second in 2:19:42. Two-time Miami Marathon winner Luis Carlos Rivero Gonzalez of Guatemala was third in 2:20:01. Marta Ayala of Ethiopia