As per New York Road Runners in 2011 one can gain guaranteed registration into the 2012 NYC Half Marathon by completing 4 of 5 NYRR Half marathons.
The five NYRR Half Marathons:
Manhattan Half – completed!
Brooklyn Half – completed!
Queens Half – completed!
Bronx Half – August 28th – injured but due to Hurricane Irene the race was cancelled and all registered racers got race credit. Thereby guaranteeing me entry into the 2012 NYC Half marathon. Completed!
Staten Island Half – October 9th – hoping to be fully recovered from my arthroscopy knee surgery, so I could have finally “completed” all five races in the NYRR Half Marathon series.