Naw, Amanda, I really doubt you'll be one of the last .
There are a lot of factors to consider, and remember the walkers and those who didn't really train at all that'll be marching along with you at the start, and some of those will be the ones you'll be cheering on as you cooldown at the finish line.
I'll let you borrow some of my duct tape, that inner voice needs to sit back and watch you do those Ks, I've already got mine taped to a desk chair , she's been stuck there since last December when I started all of this.