My longest leg was from Midland, TX to Cross City, FL.  Don't remember the distance but at 15,500 ft and LOP my TAS was 191 kts burning between 10.5 and 11.0 gph.  Took 5.5 hrs.  Two people and lots of luggage.  Ground speed ave. about 205 as I recall.
 
Leon Smith
LNCE N63LS
First flight Aug. 2003. 
Now have 800+ hrs.