Chiawana completed its run to the Mid-Columbia Conference title on Friday night, beating Pasco 48-7 in the annual Gravel Pit Bowl at Edgar Brown Stadium.
The Riverhawks finish the regular season with a 7-1 MCC mark, and 7-2 overall.
Chiawana will play host to Lewis & Clark at 7 p.m. Friday at Edgar Brown Stadium in a 4A regional game, with the winner advancing to the state tournament and loser going home.
Against Pasco, Preston Vine and Gabe Schilz were each part of three touchdowns.
Vine rushed for an 81-yard score and tossed a 31-yard scoring strike to Bennie Alferness.
Schilz had TD runs of 10 and 20 yards.
And Vine connected with Schilz for a 27-yard TD pass.
Riverhawks kicker Ryan Lowry set a school record by kicking a 50-yard field goal.