What is considered a “high elevation” in terms of getting altitude sickness?

What is considered a “high elevation” in terms of getting altitude sickness?

Climbing to these elevations can bring on symptoms of altitude sickness:

  • High altitude: 8,000 to 12,000 feet above sea level.
  • Very high altitude: 12,000 to 18,000 feet.
  • Extremely high altitude: 18,000+ feet.

For context, New York City is at an elevation of 33 feet above sea level. Denver (known as the “Mile High City”) sits at 5,000 feet, and many Rocky Mountain ski slopes are at 11,000 feet or higher. The Grand Canyon is 6,600 feet above sea level. The summit of Mount Everest is over 29,000 feet.

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