why do the broncos have 5280 on their helmets

The Denver Broncos have the number "5280" on their helmets as a tribute to the city of Denver's elevation, which is exactly 5,280 feet above sea level. This number represents Denver's nickname, the "Mile High City," since one mile equals 5,280 feet. The Broncos introduced this in their new "Mile High Collection" uniforms for the 2024 NFL season, and the number on the helmets symbolizes local pride, the city's unique altitude, and the home-field advantage it provides the team during games. It serves as a statement of Denver’s geographic identity and connection to the community.