'It's been phenomenal:' Packers, Bears fans are pumped to kickoff NFL's 100th season

NFL Experience at Grant Park in Chicago

CHICAGO -- It is a rivalry for the ages -- and a game that has been almost 100 years in the making. The Green Bay Packers are in Chicago Thursday evening, Sept. 5 to take on the Bears. Fans on both sides of the gridiron are converging upon the Windy City with excitement!

"My husband has been a huge Packers fan since he was little," said Renae Morales, a Packers fans.

Fans in Chicago made their way to the NFL Experience Festival in Grant Park on Thursday -- a hub for pregame hype and fun.

NFL Experience at Grant Park in Chicago

"Everybody is great. Everybody has been friendly -- and that's what you want today," said Cora Dyes, a Packers fan.

Photo-ops, throwing drills and of course, memorabilia helped mark the occasion. With a rivalry this old, it is sure to spark some friendly -- and family feuds...

"It's great because my sister, she gets real mad," Dyes said.

Including one father and son-in-law who traveled all the way from Texas to be part of history.

"My daughter chose a Packers fan to marry. But she did pick a great guy," said Pete Futris, a Bears fan. "A father, son-in-law outing to one of the greatest games ever."

"It's been phenomenal, the excitement around the city, all the fans," said Logan Voelker, a Packers fan.

NFL Experience at Grant Park in Chicago

The rivalry has grown roots across the nation -- with fans from all corners of the U.S. making their way to Chicago to help kick off the NFL's 100th season.

"I'm from Modesto, California. I came to see the Bears beat the Packers," said Jason Olund, a Bears fan.

Though, it's not all about the competition.

"So far, we've gotten a lot of compliments -- even from Bears fans," said Debbie Karns, a Packers fan.

As expected, fans are sharing mixed predictions for Thursday's showdown.

"Of course, Packers are going to win, hello!" Morales said.

"52 to 3," Olund (a Bears fan) said.

Time will tell.