Herod
The book also gives the endurance record of 420 hours, set in 1929 in a Ryan Brougham
I believe the the absolute record was set by a Cessna 172 using ground/air refuelling without landing. The flight apparently lasted for 64 days, 22 hours, 19 minutes and 5 seconds, having taken off on 03 Dec 1958 and landed on ot Feb 1959. Like you said, who would want to try and beat that?