McLaren did it in 6:43.22 with a street legal P1 LM which has always impressed the hell out of me.
That’s very impressive for an available $$$ to the public car, versus this factory car, but a 5:19, holy fook, that’s flying.
The high six minute range is about it for most super cars and most race cars.
The 959 record was set with the track shortened by 2 miles, 14 mi to 12 mi, due to track construction. All the rest of recorded times were on the 14 mi track length. I wonder if the 919 Porsche ran the 12 mi course to make it equal, I bet they did. Still impressive.