It's the end of an era ... Lee Corso just revealed he's retiring from "College GameDay."
The former head coach -- who joined ESPN's legendary pregame show nearly four decades ago -- announced Thursday his last appearance on the iconic program will take place on Aug. 30, during college football's Week 1.
Launch GalleryLee Corso Hard At Work Launch Gallery GettyThe 89-year-old, who will be 90 when he sits down for his finale, released a statement on his impending retirement through ESPN ... thanking all of his colleagues and fans for all of the years of support they gave him while he was on- and off-air.