I've done a couple of round-the-world flights. I usually
make a 2-3 hour flight, depending upon availability of
suitable airfields. Many legs were over 4 hours.
Probably the longest hop was KOAK to PHNL. AIR, I had
a decent amount of fuel left onboard but was nearly out
of oil when I landed in Honolulu. That was an 8 hour, 46 minute "hop"
I have flown several 1,000 NM+ legs, all real time, but
most are in the 2-3 hour time frame so somewhere in
the 400 to 600 mile range.
My last round-the-world I only lost 2 engines, at
different times, to catastrophic failures.
I usually run engines until forced to overhaul them.
My high-time engine had over 100 hours on it before
it failed.
I have logged over 390 hours in the A2A B-377 to date.
Paul