Current PB during a 10KM race is 47 minutes 33 seconds. That was in October last year. However, since I've stepped my training up for the half marathon, I was regularly getting close to that time during my training runs, which were all longer than 10KM.
During the half on Sunday, I was at the 10KM mark by 47 minutes 50 seconds, which is less than half the distance, so sub 45 minutes should be doable even by the 24[sup]th[/sup]