Rory McIlroy has been celebrating his first visit to Denver by booming drives some 400-yards on the practice range in the  ‘Mile High State’ conditions for this week’s BMW Championship on the Cherry Hills course.

The World No. 1, who is currently No. 2 on the FedEx Cup Play-Off standings, was on the range this week and amazed just how far he could hit the ball in the thin air of the Rocky Mountains State of Colorado.

McIlroy is working away on the range at Cherry Hills and you can see his reaction when he obviously clears a line of trees at the back

of the practice range.

McIlroy ‘smoked’ many drives over the 400-yard mark and on a Cherry Hills practice range where the distance to the back of the net is around 300-yards and landing his ball on University Blvd that runs alongside the course that played host to the 1978 US Open and was the venue for Phil Mickelson’s 1990 US Amateur triumph.

“Rory hit a couple drives 400 yards in our practice round,” said American Erik Compton, who played a practice round alongside the four-time Major winner on Tuesday.