Just got back from WA. 900+ miles each way. Averaged 19.4 on the way up with two guys and about 800lbs. of gear.

Speed was between 65-80 on the way up.

Averaged 18.5 on the way home. Drove straight through at a little higher speed. Needed to get home before I fell asleep.

2013 4x4 SuperCrew with the short bed and 3.55 gears.
36 gal tank. Just turned 40k miles and is almost ready for tires.