Has a College Football game ever ended 70-31?
Yes. College Football has seen a final score of 70-31 3 times. It first happened on November 18, 1989, when BYU beat Utah, and most recently on October 6, 2017, when Memphis beat UConn.
That makes 70-31 the 1476th most common final score out of 2,215 that have ever occurred in College Football. One point away, 71-31 has happened never and 70-32 has happened never.