I live in Colorado at an altitude just a shade under one mile high. I am going to drive to Keystone Colorado which is at about 10,000 feet. I have to go through the Eisenhower tunnel.
I do not think I will have any problems as long trips are fun.
https://www.codot.gov/travel/eisenhower-tunnel
I will post a future link to some photos and videos I take on my journery at over 11,000 feet.