I recently did some quick math on how long a course might be using the old "every club in the bag" axiom, Bill Amick and other studies on distances actually played by most golfers, with the average drives of PGA Tour players at 291 yards. I also used average drives of 260,230,200 and 140 based on a recent USGA study and other data.
Assuming the desire of each player to reach all greens in regulation with good shots while using a variety of clubs, I used:
• Par 3’s range from wedge to about 90% of driver distance,
• Par 4’s range from a potentially drivable hole (110% of typical tee shot distance) to the maximum distance reachable in two shots
• Par 5 holes range from reachable in two to Driver, Wood, 5I
The “ideal” total length might look like this table. For the forward tees, I did have to adjust upwards to keep the USGA minimum yards for women's par, and on the Pro tees, I had to ignore the upper limits of par, and still, 510 yards might be too short for the longest championship par 4:
Par 3 Holes
260 225 190 170 125
220 195 170 165 110
180 165 150 145 95
140 135 130 125 80
Par 4 Holes
510 475 405 365 290
490 455 390 350 280
470 435 375 335 270
450 415 360 320 260
430 395 345 305 250
410 375 330 290 240
390 355 315 275 230
370 335 300 260 220
350 315 285 245 210
315 280 255 230 205
Par 5 Holes
710 625 555 480 420
650 550 530 470 415
590 525 505 460 410
530 475 480 450 405
7465 6705 6070 5440 4515
You may debate some assumptions – like the long par 3 which some don’t like, or using a wedge par 3. You might not think that all players should reach all greens, but of course they wouldn't after a duffed tee shot.
However, these back tee yardages are similar to current PGA Tournament course lengths. I don't know how they break out their 7400 yards on a typical course, but at least my version has four sub 400 yard par 4 holes!
The other tees may surprise many at how short courses should be for most player groups, but management companies and course operators know that these lengths are pretty effective. In fact, most courses are a about 150-300 yards longer through the middle tees - more like 6850/6300/5700/4800, which is okay, as well.
Of course, its a highly theoretical excersise, length isn’t everything in golf and neither is total yardage. It’s not as important to get to any ideal yardage as it is to judge how each hole plays and fits the land. Nonetheless, I think it has some value to this thread.