Ajayi runs for career-high 229 yards, lifts No. 25 Boise State over Utah State 50-19

Boise State safety Darian Thompson makes an interception during the first half of an NCAA college football game, Saturday, Nov. 29, 2014 in Boise, Idaho. (AP Photo/The Idaho Statesman, Darin Oswald) LOCAL TELEVISION OUT (KTVB 7); MANDATORY CREDIT (The Associated Press)

Boise State defensive lineman Kamalei Correa celebrates a tackle of Utah State wide receiver Ronald Butler during an NCAA college football game, Saturday, Nov. 29, 2014 in Boise, Idaho. (AP Photo/The Idaho Statesman, Darin Oswald) LOCAL TELEVISION OUT (KTVB 7); MANDATORY CREDIT (The Associated Press)

BOISE, Idaho – Jay Ajayi ran for a career-high 229 yards and five touchdowns, and No. 25 Boise State rolled past Utah State 50-19 on Saturday night and secured a spot in the Mountain West title game.

The Broncos (10-2, 7-1), who kept alive their hopes of playing in a New Year's Day bowl game, won their 13th straight home game. They will host Fresno State for the conference championship on Saturday.

Utah State (9-4, 6-2) dropped its first November road game since 2009 and failed to return to the conference title game after representing the Mountain Division last year.

With the division title on the line in a game that boasted the Mountain West's top offense in Boise State and top defense in Utah State, the matchup was decisively one-sided.