How many meters above sea level does it become difficult to breathe in the Alps?

 How many meters above sea level does it become difficult to breathe in the Alps?

 

The level of altitude at which it becomes difficult to breathe can vary depending on the individual's physical condition and acclimation to high altitude, but in general, it is said that the altitude above 2500 meters can start to cause symptoms of altitude sickness such as headaches, dizziness, and shortness of breath. The Alps cover a wide range of altitudes, so the difficulty of breathing can vary depending on the specific location and altitude.