You must not have been following Ivy athletics that closely. The Bill Bradley-led Tigers were a Final Four team, 'way back in the day.
And Princeton t&f has always been able to draw a few students who were somewhat, um, marginal academically. And CMcC was there a lot more than five years ago.
Shucks, go back far enough and you've got Bill Bonthron, who had the WR in the 1500.
In any case, Fred Samara and his staff do a wonderful job of recruiting and coaching top athletes in track and field and cross country. They are often contenders at the national level.