I did a search but could not find an answer this.

I was fortunate enough to get targeted for Mileathon this time around. Here is the question I have. The "race" is from Oct 1-Jan 31. So, does that mean if I book a ticket today for travel Oct 4-6, that trip does not count? Or, if I book a ticket Oct 1 for travel next March, that trip does not count? Do I have to both book and fly within the Oct 1-Jan 31 time frame?

I have currently have 5 booked trips between those dates already, so I am hoping they count. Otherwise, I wil have to get busy flying some more!