Coming up next! Only a few days left, till one of the most challenging towerruns in the world will be held in Chicago on November 2.  With 103 floors and 2109 steps, the Willis Tower Skyrise (originally Sears Tower) is one of the most sophisticated and longest Indoor-Towerruns. The Sears Tower was completed in 1974 and stands with its height of 527m in the center of the “Windy City”. For many years it was the tallest building in the world. I’ll be at the start line again this year with over 2,000 participants. I’m looking forward to it!