Sunday marked the 32nd Fight for Air Stair Climb, a physically-taxing endurance event that sends athletes of all ages and ability levels up Oakbrook Terrace Tower.
On Sunday, Chicago will celebrate 10 years of the city's largest stair climb at Presidential Towers.
The American Lung Association's Fight for Air Climb at Presidential Towers will take place on Sunday, March 8, to benefit the American Lung Association.
Thousands of people hustled up the Hancock Tower Sunday to help raise money to fight lung disease, many of them climbed all 94 flights of stairs in the skyscraper.