Here's the redemption chart (you have to click "continue" at the bottom of the AA rewards page):

GO points = Miles
25,000 = 5,000
50,000 = 10,000
75,000 = 15,000
100,000 = 20,000
125,000 = 25,000
125,000 = 1 free rt. ticket

Sounds like a lot of stories, but hey if you got a lot to share....