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I usually track long touring trips just to see how mine does on the open road. Here's one from 2015 where we went on a meandering trip through the Black Hills, Yellowstone, the Tetons and back:
And this one was from early 2018 where we went out through Colorado, Arizona, New Mexico, and Texas to visit my sister in Scottsdale, then down to see Karchner Caverns near Tucson, AZ and across to see Carlsbad Caverns just north of El Paso, TX. There was a lot more Interstate Highway travel (75-85 mph) and city driving in the Phoenix metro area on this trip than the 2015 trip above to Yellowstone, etc, hence the slightly lower MPG.