Tommy - I was thinking - The Best Courses in America that are an enjoyable/comfortable walk.
I loved Lahinch, Ballybunion was a bit more of a trek but also a grand walk indeed.
Garland - Tetherow might only be an eight mile walk
Some of the holes are not bad, although the lack of a "walking path" really ticked me off. ie) You have to walk along the cart paths which are often a bit out of the way and by no means direct on many holes.
The killers at Tetherow are - 2nd Green to 3rd Tee - aka - the voyage to Kidd Corner (300ish yards over a bridge), 6th Green to 7th Tee - aka - the voyage back from Kidd Corner (250ish yards), 9th Green to 10th Tee (250 yards), 12th Green to 13th Tee (200 yards), 13th Green to 14th Tee (200 yards), 15th Green to 16th Tee, (200 yards), 18th Green to Clubhouse (1/2 mile or so).
I will readily admit that I really enjoy the course, I love it in Bend, the views are spectacular, the ground is F&F and the layout can be kind of crazy, so my 5 out of 10 walking rating is totally biased.