FORT COLLINS, Colo. (AP) — Colorado and Colorado State agreed Tuesday to keep their football rivalry alive past 2010, but it's unclear if the game will ever return to the Denver Broncos' stadium.

CU athletic director Mike Bohn and CSU athletic director Paul Kowalczyk announced they will extend the Rocky Mountain Showdown past the 2010 expiration of the current contract.

The length of the extension wasn't announced, and the schools said the dates and locations haven't been worked out.