Close to 1,000 climbers climbed 31 flights of stairs, many of them with a purpose.
Like Brian Dune who is fighting in honor of his late mother.
"Sandy Dune, she lost her battle with COPD in March 2010," Dune said. "I've been running in her honor ever since."
Or fireman Rich Gray, who along with colleagues from other firehouses, is here to not only competing for bragging rights, but also for awareness.
"My dad is a recipient of a right lung transplant four years ago this fall. After he got the transplant the flyer was in our firehouse and I asked the guys 'Do you want to do this?' It's a great cause true to my heart," Gray said.
For Stage 4 lung cancer patient Meghan O'Brien this means so much.
"I'm a little unique," she said. "I'm only 31 years old and I was a non-smoker, I was a PE and Health teacher when I was diagnosed."
According to the American Lung Association, lung cancer kills more people than all other cancers combined.
Folks like O'Brien just want a fair chance at raising money to improve lung health and research.
"There's this really big stigma that all of the people with lung cancer were smokers and all of this research money, no one wants to give money to them because they think they did it to themselves, but people like me didn't do it to themselves," she said.
The climbers do have a goal they are trying to raise $185,000 Sunday.