The elevation in Boulder is 5,280 feet above sea level.
For most visitors, this altitude doesn’t present a significant challenge unless undertaking strenuous activities like hiking or exercise.
Some people feel that drinking alcohol at altitude has an increased effect on your system, but studies show this is really just altitude sickness, which presents simliar symptoms to alcohol intoxication. The best way to combat the altitude is to stay hydrated by drinking more water than usual, especially when consuming alcohol.
One other thing to note is that the climate in Boulder is very dry, so don’t forget to pack lotion or lip balm. You’ll also be one mile closer to the sun, so sunblock would be a good choice as well.