NYC Half Marathon

(Insert Preface Here)
I put my name into the lottery to get into the half marathon a while ago. I haven't done one in the past year so i didn't have a qualifying time. My dad used his marathon time to get in. I didn't get selected in the lottery and I pretty much forgot about it. About 4 days ago my dad said he could get me a number. I think one of his patients had gotten in but couldn't run. So I said I'd do it as part of my long run for the week and not really race it. So yesterday, my dad called me and told me that the guy he was getting he number from didn't realize that you had to go pick up the number the day before the race. So again, I was numberless, but i decided I'd just jump in anyway.
The race started at 7am, so I had to get up at 4:45 to get to the city so we could find parking and get ready and such. I tried to go to sleep at about 10:45, but I haven't gone to bed that early in forever so it didn't really work. I fell asleep at about 1:45, so I got a whopping 3 hours of sleep. Anyway, when I woke up it was thundering, raining, and dark. It was still raining when we got to the city, so we put off getting out of the car for as long as we could, then walked across the park to the bag drop off place. I was a little worried that it would be hard to get into the field because there was a good amount of security and about 14-16,000 people in the race. When i walked into the corrals, some race staff guy asked me what my number was. I said "I don't have one" and walked past him. Very tight security. I lined up at the last minute and was probably about 4000th off the line.
My first mile was 7:10 since i was kind of stuck in traffic. I didn't really care since I was still just thinking of it as my Sunday run. As i kept splitting at every mile though, I realized that there was no way that I was going to run with all of these people and not race it at least a little. From the start, virtually every mile was faster than the previous one. I never really pushed it as hard as I could, but I brought it up to a brisk yet comfortable pace. I really felt fine for the whole time until the 13th mile where I let it out a bit and dropped a 5:34.
Long story short, I ran a 1:23:12. I would've come in 175th and third in my age group so i guess i should've just made up a qualifying time. That's about a 3 and a half minute PR.
My dad ran about a 1:26. He is a beast.
If anyone cares, I'll put my splits up. Also, R2C13 will be ballin outrageous. That is all.