Finkbine Golf Course, ~7165 yards (length from the blacks is 7239, but the back markers on 10 and 13 are generally in play only during tournaments)
After I posted this, I went through the whole thread and was surprised how few people are playing over 7000 yards. If this group isn't, why are so many courses being built at extreme lengths? I once played a course in Missouri at just over 7500 yards soaking wet, I have to admit it was a bit of a slog! I'd rather it had tipped out at 6500 and been more strategic.
My home course has lengthened here and there over the years I've been playing it. I think the back tees were around 6700 yards when I first played the course around 30 years ago, but I'd have to find an old scorecard to be sure. Recalling the lengthening of various holes I was surprised that actually many of them improved the holes, and none were made worse. There were obviously some that were done for scorecard reasons, otherwise why add only 10 or 15 yards to a hole. But several that added significant length totally changed the character of the hole, and IMHO improved it.