Not sure what you are asking.
If you want to ride mostly forest roads there is an infinite number of loops and routes you could string together.
There are not a lot of long (multi-day) singletracks in the Sierra. Most of the suitable trails are locked up in designated Wilderness. If you are willing to drive a bit you can tie together about 300 miles or so of Rails to Trail in NE CA and southern OR.
Yeah, I was looking for something more straightforward than the forest road loops, but oh well. I might just have to get around there and wing it.
Thanks!