After almost 2 years of ownership I finally made a long trip not towing a heavy load. Nominal cruising speed was between 65 and 80 mph (limit +5). 700# in the bed on the way down and empty coming back. 25.2 average for the round trip and 27.6 on the final leg which was mostly 65-70 mph. Considering the truck is a long box Super Crew 4x4 I'm pretty happy.