Answer based on context:

Coming off their bye week, the Broncos played host to the Green Bay Packers on Sunday Night Football, with both teams entering the game with 6-0 records. The Broncos jumped out to a 17-0 lead, consisting of a pair of touchdown runs by running back Ronnie Hillman a 1-yarder in the first quarter and a 15-yarder in the second quarter, followed by a 50-yard field goal by placekicker Brandon McManus. The Packers got on the scoreboard late in the second quarter, with running back Eddie Lacy rushing for a 2-yard touchdown. The Packers narrowed the Broncos' lead to 17-10 on the initial possession of the second half, with a 56-yard field goal by placekicker Mason Crosby. The Broncos' defense then held the Packers scoreless for the remainder of the game, and their offense added to their lead, with running back C. J. Anderson rushing for a 28-yard touchdown, followed in the fourth quarter by a 24-yard field goal by McManus. Later, linebacker DeMarcus Ware forced a sack and fumble off Packers' quarterback Aaron Rodgers, resulting in a safety that put the game out of reach. NotesOwner Pat Bowlen was inducted into the Broncos' Ring of Fame during halftime. Due to his battle with Alzheimer's disease, Bowlen relinquished control of the team to team president Joe Ellis and executive vice president/general manager John Elway prior to the start of the 2014 season. The Broncos' defense limited Aaron Rodgers to just 77 yards passing the lowest of Rodgers' career in a game where he wasn't knocked out by injury. The Broncos started 7-0 for only the second time in franchise history, the other time was in 1998, when they started 13-0 and won Super Bowl XXXIII. This was the first of two games in which the Broncos wore their alternate navy blue jerseys the other game was Week 14 vs. the Oakland Raiders.

How many yards was the longest field goal of the game?
56