 Complete the following phrase:  A best of 2:36:14 hours came at the 2015 Seoul International Marathon, though she was eleventh overall in the higher calibre field. She closed the year with wins at the Incheon Half Marathon setting a new best of 74:15 minutes and won the National Games Marathon title. March 2016 saw Ahn set new bests in the half marathon 73:41 minutes and the marathon 2:32:15. These performances earned her selection for South Korea at the 2016 Summer Olympics. She finished 42nd at the 