Numerous additional named Flatirons are on the southern part of Green Mountain, Bear Peak, and among the surrounding foothills.

Of note is the East Face Standard route on the Third Flatiron; guidebook author and longtime climber Richard Rossiter calls it "The best 5.4 in the solar system.

The city government, the University of Colorado, and many businesses make use of this symbol in their logos, advertisements, and marketing materials.

In addition, Boulder often is referred to in the tech industry as the "Silicon Flatirons", analogous to Santa Clara Valley's famous nickname.

The third Flatiron bore a "CU," for the University of Colorado, in 50-foot (15 m) white letters from the 1950s until 1980, when the city painted over the initials to restore the natural look of the stone formation.