Question: when did the broncos win back to back super bowls
Answer: They have won eight AFC Championships ( 1977 , 1986 , 1987 , 1989 , 1997 , 1998 , 2013 , 2015 , and three Super Bowl championships ( 1997 ( XXXII ) , 1998 ( XXXIII ) , 2015 ( 50 ) .