1686 miles
First fill-up today, so I will be able to calculate my fuel economy that way on the next one.
Also put my Scangauge in the car. It arrived yesterday. I ended up getting the SG-II rather than the SG-E. For now it is mounted below the instrument cluster. This is temporary, as I am going to have to figure out how to route the cable and use a windshield mount. It works for now though. The only thing it blocks that is important is the fuel level gauge. Here is a picture of the location. That 57.5mpg average fuel economy number was from a 17 mile trip to my dads house. Looking forward to comparing the computer's numbers to manual calculations at my next fill-up.