I mean "nowhere near" in the sense that the outliers -- the current and previous record holder for average speed -- haven't managed to crack your proposed 180mp

I mean "nowhere near" in the sense that the outliers -- the current and previous record holder for average speed -- haven't managed to crack your proposed 180mph criterion for "high speed", and the non-outliers definitely aren't coming close to that number. Common definitions of "high speed" rail kick in at 200kph or 250kph, which are 124mph and 155mph respectively. Even if we go with the higher of those numbers, that's still around a 13% minimum difference in average speed between what's accepted and what you're proposing. (for non-Americans, what I'm arguing with here is the idea that ~290kph would be the minimum average speed to call something "high speed rail")