Interesting to hear people so concerned about range. I also ride a motorcycle, a dual sport, so it's off road and on. It has a range just shy of 200 miles. I haven't had an issue with finding fuel within 150 miles or so, and it also gives me a break to stretch my legs. I can't imagine ever needing a range of 600 miles, wow.
Well, several folks - myself included - are planning trips up into the Yukon/NWT/Alaska. Here is one jaunt that requires a health 1000km range
There might be fuel in Tungsten or Ross River, but I haven't confirmed that yet.