Q. How far I can drive at a time - Ray ZR?

Basically, it depends on the rider, the riding conditions. The maximum that you can ride on this Yamaha scooter is 45 KM at a decent speed if 40kmph.

I have driven 600 km in a day (hardly 9 hrs)

I Personally GO for a 245 km in one time from ahmedabad to udaipur.

I drove almost 200 km at a stretch

Don't you try going to the moon