this was my 1st year cycling, and what my 'average' was varied greatly by time of year and where I was experience wise. I'm considering the outdoor season all but over here, so while I'll continue to do some longer rides on weekends, I am not training for them, and they're ramp down rides instead of building rides for something like a long ride or century. It now gets too dark to ride during the week, at least with the hours I work. Instead, I am going to the gym to spin class, run, etc.

But let me answer your latest question:
how can you ride long distances on both Sat. & Sun?
Only by training & adding mileage slowly. The general rule of thumb is to increase your total distance by 10% a week. You can do up a quick little spreadsheet that reflects this and see that at a certain point in time you'll need to do back to back rides on the weekend to continue increasing. And you don't jump into long rides both days either - what I'd say is at the beginning plan one longer day and one shorter day, and add miles to both til the longer ride hits your objective. Then you can add the miles to the shorter ride til both are even or near even.