how big is mount washington

Elevation is 6,289 ft

We rode the Cog Railway up to the top. It was 6288 ft high. The trees look like bushes because they say the altitude stunts the growth. And no grass.

Yes it is. 8 miles drive upwards. Train is another option if don't want to drive

Ursula is correct.

6288 ft.

It is the tallest mountain in the Northeast. I believe over 8000 meters, though not sure - sorry, just saw Ursula's answer. Go by that