CHICAGO (CBS) — With some huffing and puffing, more than 500 people took their ambitions sky-high on Sunday as they raced to the top of the Willis Tower.

Upon finishing, the participants got ribbons and congratulations for completing the 13th annual SkyRise Chicago Stair Climb.

READ MORE: Chicago Police Officer Shot, Wounded In Calumet Heights

The race route goes up 103 flights of stairs at the Willis Tower.

READ MORE: Jussie Smollett Trial: Abel Osundairo, One Of Two Brothers Who Said He Was Paid To Help Stage Attack, Says Smollett 'Wanted Me To Fake Beat Him Up'

People who did not run all the way up could hand-cycle in a machine calibrated to match the climbing experience. There was also a virtual option.

MORE NEWS: Chicago Weather: Partly Cloudy And Breezy Overnight

All proceeds benefited Chicago’s Shirley Ryan AbilityLab.

CBS 2 Chicago Staff