If you're looking for a neat-o thing to do this weekend, head on down to the 48th annual Nevada City Classic bike race. Racing starts at 1:00 and goes until 6:30.
If you are heading down there, it sure does make for a nice century ride from Truckee! We take hwy 89 to Sierraville and then hwy 49 the rest of the way. That's a route even I can't get lost on! You'll pass through a few towns on this ride where you can get food & drink, eliminating the need to carry much in the way of supplies. You'll be glad you have the spare room in your jersey pockets for the clothes you'll inevitably be shedding as the sun ascends in the sky and you descend to lower elevations.
The heart of this ride is the 20 or so miles from Yuba gap to Downieville. You'll loose about 3,500ft of elevation on this section and have the feel of being in a pro peleton cruising along at 28-30 mph. Then you realize that those guys keep that pace on the flats, in a headwind..... for days and days on end. That's when I decide to stick with the fat tires and keep myself in the mountains with the roots and rocks. I seem to "wired" better for that type of thing.