Thousands climb Willis Tower stairs for charity

November 6, 2011 4:29:00 PM PST
About 2,500 people climbed all 103 floors to the top of the Willis Tower Sunday to raise money for the Rehabilitation Institute of Chicago.

"SkyRise Chicago" is the third annual stair climbing and hand cycling fundraiser. It's about 2,100 steps to reach the Skydeck, and event organizers say it is the world's tallest indoor climb event.

It's not clear how much money was raised, but last year the event raised more than a $1 million.