Range is dependent on many factors. How hard you pedal, your weight, where you ride (hills) and how fast you go all effect it significantly, so whatever range you get is specific to you, and what anybody else gets has little bearing on the matter.
Anecdotally, based on all the information from this forum, you could say that an average rider of electric bikes (think about weight, age and fitness) over average terrain and in average conditions at average speed (12mph?) gets something like 30 miles per 10 amp-hours of 36v battery.
On my bike, I have a regular 52 mile ride that I do. One time I completed it using the battery at a rate of about 5Wh per mile. Another time I used 15Wh per mile for the same journey. One time, I did the same journey on the same bike without switching the power on. The only difference was my motivation to put in some effort and the speed I went.
One other point. Never extrapolate your range based on the proportion of battery you've used. The only way you really know what it is is to run the battery right down until it cuts off. Then you know whether you can trust the meter. The battery becomes less powerful as it goes down, so you use it up more quickly the further you go. Also, the voltage starts to accelerate downwards when it approaches empty. Many meters or predictions don't take that into consideration.
