Rode off Hwy 20 today up from Nevada City. It's good. Real good down there.
Rode Pioneer from Conservancy Camp Rd to just shy of Omega Rest stop. Good conditions. The moto trails are just a weekend away from being the fast, tacky, bermed out love that everybody heads down there for. They were a little muddy and soft today. If you moto.... now's your time!!
This site is a good place to look for beta if you're new to riding down there. It'll get you the basics. There's also the Nevada City Ranger Station in Nevada City. Take Hwy 20 to JUST before N.C. and make a right on Hwy 49. The Ranger Station is about a 1/4 mile on your right. Once you get there, grab yourself a copy of the South Yuba Recreation Guide. It's got enough to keep you occupied for plenty of riding when the trails are snowed in around Truckee.