Here is my composite course - mostly included in the profiles on this web site - that is 6,400 yards from the tips and in my mind would offer endless challenges and a balanced course made up mostly of half par holes.
The short par 4s are tricky and quirky, protected by small greens and deep bunkers in most cases.
The par 3s range from Pasatiempo's 227 yard #3 to Troon's 115 yard Postage Stamp.
The par 5s offer unique challenges - the wide, steeply sloping green at #7 Friars Head; the OB and wind at #14 Royal St Georges, and the tiny, dune protected green at Tobacco Road. None is a cinch par let alone birdie or eagle.
The long par 4s are brutes - #15 at Oakmont and #17 at the Old Course. Holes that appear to be medium length such as #2 at Olympic Club's Lakeside course are very difficult at 397 yards as it's straight up hill, into the prevailing wind, and has a small green that's well protected by deep bunkers. #4 at Bandon Dunes is another tough par 4 at just 400 yards, but the gorse-lined fairway is tight and the tee shot must be just right.
Here it is...actually 6,399 yards...a course that would offer a serious challenge to all players of all skill levels. And also a very tough walk!
#1 - National Golf Links 325 yards par 4
#2 - Olympic Club Lake 397 yards par 4
#3 - Pasatiempo 225 yards par 3
#4 - Bandon Dunes 400 yards par 4
#5 - Cuscowilla 305 yards par 4
#6 - Royal Cinque Ports 325 yards par 4
#7 - Friars Head 540 yards par 5
#8 - Troon 115 yards par 3
#9 - Cypress Point 320 yards par 4
Front nine 2952 yards par 35
#10 - Riviera 300 yards par 4
#11 - St Andrews Old 170 yards par 3
#12 - Rustic Canyon 310 yards par 4
#13 - Tobacco Road 536 yards par 5
#14 - Royal St George 500 yards par 5
#15 - Oakmont 460 yards par 4
#16 - Pasatiempo 390 yards par 4
#17 - St Andrews Old 461 yards par 4
#18 - Olympic Lake 320 yards par 4
Back nine 3447 yards par 37
Total 6399 yards par 72