First mile split: 8:33
Second mile split: 18:00
Third mile split: 27:21 (something around there, I think)
Final time (3.5 miles): 31:26
So, I started out kind of fast, but I ended up with just under a 9-minute pace (8:59). I'm really happy with that. And I beat my sister by 14 seconds :-)
So, all in all, not bad for my first race in 14 years.