In Real Life: 18 hrs. Used to be the world’s longest non-stop from Singapore to New York. It was an Airbus A350-900ULR. I was a passenger, and the flight has no economy class but business & premium economy only.
In the Sim: 38 hrs, 54 mins. From Singapore to Bora Bora Islands. Yeah, it is impossible. It was VORs to VORs, a total of 17 VORs, coupled with GPS, and with 12 airport overflights simulating re-fueling.
Why? Well, I used to be a sailor. My longest sailing time at sea was 30 days, from Panama to Japan. There was no internet, but we have the comfort of X-Band & S-Band Radars. This was a surprise to me that even the most sophisticated commercial aircraft does not have one. Flirting with a storm in the middle of the Pacific Ocean was normal, and somehow enjoyable. It was bonding with nature, and it breeds patience and resilience in every skillful sailor. For the same reason, I chose a GA plane. The Mooney is fast & a combo of old-school and modern avionics.
My rig is air-cooled Ryzen 3700xt with RTX 3070. Happy so stable!
Did I sleep? Same when I was sailing. I slept, and set my alarm on crucial waypoints. We used to be on 4-hour watch shifts at sea. I am mostly at 3,000 ft but changing to 7,000 too when avoiding heavy rains. The lightnings were awesome too.
My flight plan. Never exceeded the endurance time of the Mooney on each leg, a bit of realism.
The International Date Line Bug! The sim flight path showed I circumnavigated the whole world.
The amazing GTN 750 by PMS50 @ScorpionFilm422 helped me a lot to evade bad weather conditions. I am on live weather conditions. The unpredictable weather changes was fun.
And my beautiful destination. Bora Bora Island.
Since I circumnavigated the world a couple of times when I was sailing, it would be normal for me to do 24 hours, or even weeks of non-stop flights. It is a beautiful sim, reliving my beautiful sailing journey.