The 2006 Masters will be played on the second longest course in major championship history.
Whistling Straits 2004 USPGA - 7,514 yards
Augusta 2006 Masters - 7,445 yards
Columbine 1967 USPGA - 7,436 yards
Medinah 1999 USPGA - 7,401 yards
Carnoustie 1999 Open - 7,361 yards
Hazeltine 2002 USPGA - 7,360 yards
Crooked Stick 1991 USPGA - 7,295 yards
Six holes at Augusta National are to be lengthened and the par-72 course extended from 7,290 to 7,445 yards.
The tees at the par-four first, par-three fourth, par-four seventh, par-four 11th, par-five 15th and par-four 17th will all be moved back.
The longest course in major history was Whistling Straits which measured 7,514 yards for the USPGA in 2004.
Augusta National chairman Hootie Johnson said: "Since the first Masters in 1934, this golf course has evolved and that process continues.
"Our objective is to maintain the integrity and shot values of the golf course as envisioned by (course designers) Bobby Jones and Alister Mackenzie.
"Players' scores are not a factor. We will keep the golf course current with the times."
Construction work began this month with the completion scheduled for around October.