Each segment is a minimum 100 points, so assuming three segments, you get 300 points.
With the fall double-points promo, that gives you another 300, so 600 total.
Then, with your credit card statement, you get 2 points per dollar spent on Amtrak, so that's 150 points. I think they're running a doulbe points promo, so that's 300.
So, you should get 900 points for the run. Only 300 will count towards select or select plus.