What kind of fuel mileage are you guys getting on your 500's
This is an impossible question to accurately answer. terrain conditions, jetting, mods, throttle discipline (or lack of) all play a major role in fuel economy.
Dual sporting my crisp jetted stock KX500 with good throttle control on logging roads I can squeek out about 45 miles on a tankfull
*edit* Oops, I also run a 15T sprocket when I dual sport, hence the better fuel economy