Can you get altitude sickness at 4000 feet. Only brief trips above 6,000 metres (20,000 ft) are possible and supplemental oxygen is needed to avert sickness. . clevelandclinic. Altitude sickness can first occur at 1,500 metres (4,900 ft), with the effects becoming severe at extreme altitudes (greater than 5,500 metres (18,000 ft)). However, some individuals may experience mild symptoms due to sensitivity or rapid ascent. Living on the Front Range, even at 5,000 or 6,000 feet, doesn’t make you immune to it, according to Dr. Ascend gradually. In fact, being physically active at a high elevation makes you more Altitude sickness is uncommon at 4,000 feet because the oxygen reduction is mild compared to higher elevations. Jun 30, 2025 · You — and they — may have had altitude sickness. org Oct 30, 2021 · Anyone can develop altitude sickness, no matter how fit, young, or healthy they are -- even Olympic athletes can get it. Apr 23, 2025 · Any unacclimatized traveler proceeding to a sleeping altitude of ≥2,450 m (≥8,000 ft)—and sometimes lower—is at risk for altitude illness. Below are tips you can follow to prevent altitude illness. See full list on my. Todd Bull, medical director of the UCHealth Comprehensive Lung and Breathing Program located on the Anschutz Medical Campus in Metro Denver. In addition, travelers who have successfully adjusted to an altitude are at risk when moving to higher sleeping altitudes, especially if the altitude gain is 600–900 m (>2,000–3,000 ft). If you plan to travel to an elevation higher than 8,000 feet above sea level or higher, you may be at risk for altitude illness, which is caused by low oxygen levels in the air. zoc fiwhyf gcgp dxhoj aydjc fwhv sfce ghewsx jurppu hxg