On October 4, 2003, at Kinnick Stadium, he established the school single-game record for most passing yards: 389 vs. Iowa. The record stood until Devin Gardner totaled 503 yards on October 19, 2013 against Indiana. In his senior campaign, Navarre again led Michigan to a 10–3 overall record, and the team's first Rose Bowl appearance since the 1997 season. During the regular season, Navarre amassed 3,331 passing yards and 24 touchdowns, posting wins over Michigan rivals, Notre Dame, 38–0, and Ohio State, 35-21. The Wolverines finished the season against USC, ranked #1 in both polls, in the Rose Bowl. In the 28–14 loss, Navarre had played his last game as a quarterback at Michigan, gaining 271 passing yards and one touchdown on 27 completions in 46 attempts.