But even when shortness of breath is caused by a health condition, it can still lead to anxiety, because hyperventilation and trouble breathing can trigger anxiety attacks. When shortness of breath is caused by anxiety, you need to treat the anxiety first.
The City of Aspen is the Home Rule Municipality that is the county seat and the most populous municipality of Pitkin County, Colorado, United States. The city population was 6658 at the 2010 United States Census.
If the only way for out of towners to get to Vail/Aspen is via the Denver airport then I would think that far more out of towners would choose Vail over Aspen simply because Vail is a 2-Hr drive from the airport while Aspen is a 4-Hr drive.