What is the tallest mountain in the continental US?

Mt. Whitney, which is 14500 ft,  is the tallest mountain in the continental US. Although if we were to include the state of Alaska, then the tallest mountain is actually Mt Denali, which is 20,320 ft. Mt. Whitney is actually only the 17th tallest mountain in all of the US, where the tallest 1-16 are all mountains in Alaska.