The fact we have an area on the forum titled Long Distance/Iron Butt Rally should answer that question. I moved your thread to it for 'ya.
I remember Bill Crittenden in the '05 IBR on one and entertaining story of his DNF. But I don't see any other "Boss Hoss" bikes on the finishers list for any of the certified rides Maybe he didn't call it that model and a different bike name?an early Boss Hoss 350ci Chevy engine, one speed tranny. Completed 1500 miles in less than 24 hrs . I believe all documented with the IronButt group, ......
Catch a little luck with traffic, and you don't even need to lose any sleep I routinely average 60-mph or a little better when traveling on the interstates even considering a quick stop for lunch.It's only 24 hours. How does your normal day go? Do you spend more than a third of it standing around doing nothing? 8 hours working, 8 or so hours playing, and whatever is left is for sleeping. Skip that last part just once and stop for a 20 minute power nap IF you need it. Dried snacks in the tank back and some way to drink water while the wheels are rolling. No need to "energy drinks" of caffeine because each forced UP comes with an uncontrolled CRASH (instead of normal fatigue that you can notice coming).
I'm still wondering why this question even came up on an FJR forum. It's been a bike of choice amongst the long distance community since it's introduction. Farkle up the thing with cruise control, touring windshield, GPS, custom seat, backrest, heated grips, highway pegs and a cup holder; don your 'Stich, fire up the bluetooth helmet sound system and then just stay awake in comfort for 16 hours. Only 3 or 4 fuel stops required.
If you want to join the IBA (Iron Butt Association) you need to do a documented 1000 in 24 hours. I have done a few and there are various methods to try. Just get up really early and keep riding! That is one way. Stopping only if you can do all 3 things at once: get gas, get food/drink and hit the bathroom!