I have a useful fuel load of 97 gallons. At 155 knots and 10000 MSL, I have about 8 hours and 10 minutes of flight time. I prefer to land with 1.5 hours of fuel remaining. So, my longest flights are usually 6.5 hours or 1000 nautical miles, in no wind conditions.
On one trip I flew non stop from Seattle area to home in Wisconsin in about 6 hours and 20 minutes. I averaged about 55 knot tail wind that day at 13000 MSL.
The Bonanza seats are very comfortable. Compared to long flights I have taken in Pipers and Cessnas, the Bonanza does not give me Tired Butt.
Tom