Highly variable due to conditions and altitude.
I have gone 95 miles on the stock tank just cruising on jeep roads and enjoying the sights. Cool and high elevation.
51 miles taking down our desert course, ran it dry, hot, slow going through a lot of sand stopping and starting, and I rode the course out in the morning at a pretty good clip.
44 miles mpg for a 55 mile single track ride in Idaho, used 1.25 gallons, a few miles of asphalt, then a mile or so of jeep road, then the rest all slow going single track, high elevation and mid 70's.
Average desert racing mpg around 32-35 mpg, same as my 04 550 got with it jetted correctly.