MORRISON, Colo. (CBS4) – The goal was to get 2,001 people to register for the largest stair climb in the country, but instead nearly 3,000 trekked up Red Rocks amphitheatre. They honored firefighters who died climbing stairs in the Twin Towers to save trapped victims.

The climb started near the lower lots and bag pipes played “Amazing Grace” as firefighters made their way up a path toward the amphitheatre. Following the firefighters were family members and other people who were climbing to show their support.

People could wear a sticker with a fallen firefighter’s name and picture on it. It was to give them a connection to someone as they climbed.

Once at the amphitheatre the climbers did nine laps — the same amount of stairs as 110 stories — or the height of the World Trade Center.

“The past 10 years, it hasn’t gotten any further away for me personally. I still think about that day almost every day of my life, and to be up here with all of these people climbing in remembrance of the people lost that day is truly an honor … for what makes this country what it is,” West Metro Firefighter Shawn Duncan said.

The climb took about two hours. It was the third year for the climb that draws in people from around the country, including New York.