Denver Broncos quarterback Peyton Manning has rebuffed talk about building his legacy ahead of the Super Bowl this Sunday.

The 37-year-old has the chance to win the second Vince Lombardi Trophy of his 16-year NFL career and close the gap on his long-term rival Tom Brady, along with legend Joe Montana, who hold three and four Super Bowl rings respectively.

"I've been being asked about my legacy since I was about 25 years old. I'm not sure you can have a legacy when you're 25 years old. Even 37," Manning told reporters.

"I'd have to be, like, 70 to have a legacy. I'm not even 100 percent sure what the word even means."

Manning broke the single-season touchdown record along with the record number of passing yards in a single campaign this year.