Thunderhill in Madison, Ohio (Northern Ohio - east of Cleveland)
Par 72 7,504 yards 78.5 152
Par 72 6,866 yards 74.5 144
Par 72 6,436 yards 72.5 137
Par 72 5,754 yards 70.1 128
Par 72 4,769 yards 68.5 121
For an oddity course... That is very difficult - at one time was ranked the toughest course according to slope/rating in Ohio (not sure if this is still the case or not??). Many years back (2001 or 2002), I played the course when I was visiting my best friend who was attending medical school in Cleveland. He pulled together a four day trip where we would play several courses throughout the area. And one was Thunderhill.
The starter at the first tee - he will ask for your USGA handicap card if you walk back to the championship tee box which is known as the 'Lightning' tees. They don't let you play the tips unless you are a low single digit handicapper. The course is long, tight and has a lot of water hazards as it used to be the home of a fish hatchery. Pretty awesome course if you want to test yourself and play one of the more challenging courses out there.
We played it more recently in the Newport Cup.
It's not golf. It's a joke. I recommend you (reading this) just stay away. So many good courses in this area, don't waste your money on Thunder Hill.
The most difficult course I've ever played? Oakmont during regular conditions. I've played Oakland Hills, too, and that might be second, but it's not close.
I have to agree with Erik on this one. That was one of the worst courses I have ever played. It was hard yes but in a totally unfair and ridiculous way. I remember hitting a 70 yard lob wedge into the front portion of one of the greens and it bounced like 15 feet in the air then then bounded over the green into the water. The tour plays hard and fast courses but Thunder Hill is stupid.