Kind of a fun exercise, although I have to say, Tot Hill and Tobacco Rd. in the top 10 with The International?
They are 6500 yards, and I thought TR especially wasn't that hard as long as you stayed out of the weeds...not that difficult when the fairways are 60 yards wide...
As for the International, I played the Pines in the Ouimet tournament in Boston a few years ago, and it is quite hard. The tees we played were the third from back, and were about 6950. My playing partners and I had fun laughing at how far back the "Tiger tees" were on each hole. The placement of some of them is absurd, and the course really does set up aesthetically to the tees we played.
One par 3 especially, on the front 9, had the mid-back tees for us playing about 195-200 downhill over a ravine with a pond at the bottom to a green benched half-way up the far hillside. The tiger tees were about 60 yards behind us, down the hill towards the woods, maybe 10-15 ft. below the crest where our tee was. So from there, it's 265, completely blind to a rather pretty par 3 surrounded by trouble. Does that make any sense?
That green mentioned in the article comes at the end of a miles-long par 5, where my 260 yard drive didn't reach the shortest tee box. The green is as big as a parking lot, with four or five distinct quadrants each larger than a normal green. We joked that if we had caddies, we'd hear, "well pards you have 127 to the stick, umm...48 to the front...."
The Pines is not a bad course, a bit of a 1960s slog even from the appropriate tees, but Fazio's new Oaks course has given the club quite a lift. Compared to the Pines it's a gem, but probably at least on the level as Waverly Oaks and Pinehills, maybe close to Red Tail as well.