Little closer than I thought
Filled up the scooter this morning. Gas has gone down a bit ($3.939), so the tank was only $6.72.
Ended up pumping 1.707 gallons in a 1.8 gallon tank. That's 191.7km since the last fill up, or 119 miles. I'm still getting 70 mpg and 70x1.8 = 126 miles. I should really stay around 150km between stops to give me a more comfortable margin of error.
In other scooter news, I'm due for a 11,000km tuneup this weekend and should be near 12,000km as I approach the two year mark.