MTB Nats- how long at altitude?

Hi-
I was listening to the travel podcast and it was briefly mentioned that going to altitude a week early isn’t helpful. So, how much time does one need at altitude to adapt?

Also, for MTB Nats, by arriving the night before, pre-riding might not be possible. Do you think skipping the pre-ride is more important than arriving the evening before?

Thanks!
Pat

You really need 3-4 weeks of exposure at altitude to see the physiological benefits.

Otherwise come it when it works out for your logistics - it really doesn’t matter.