This map is usually available when you pay at the gate. I've reproduced it here so you can print out a copy in advance.

This ride was a bit unique to me because it was the largest group ride that I have been on. There were seven of us all together all gathered from different places and backgrounds. My brother Kevin and his friend Todd drove down from Sacramento. I met Eric, Danny, and Kelly in Lodi and we caravaned in. The final member of our group was Rich, a Napa local who rode to the trailhead from his house.

There was a second local that met us at the trailhead but he didn't ride with us because he wanted to ride my bike. As we were unpacking the car he buzzed Danny and Eric and set up camp on my handlebars.

Overall we had a nice mix of experience, Kevin and Rich both ride road a lot and ate up the miles and the uphills. Todd, Danny, and Eric are all crazy on the technical stuff and Kelly just ploughs through it all and just keeps going. My biggest claim to fame on this occasion was to act as the anchor for the group and keep the pace slow enough so that everyone else had an opportunity to socialize :)

From left to right in the photo: Danny, Rich, The Ogre (me), Kelly, Todd and Eric. Kevin took the picture and managed to not be photographed for the entire ride.

The ride starts out with a climb up fire road and steep singletrack. On the way up there were several sections where we were forced to carry or push our bikes up steep sections. There were also several fun/ challenging sections where it was really steep and you are hopping logs, rocks, and scrambling over loose dirt, leaves, and gravel. When we finally reached the top of the climb we were treated with some awesome views of Napa and the surrounding countryside.

After we hit the crest the trail drops down into some more forested areas and there is a fairly long stretch of fast rolling singletrack. There are some really cool sections where you are zipping downhill with bushes and trees flying by on either side are particularly fun. A little bit lower down the trail is carved into a steep hillside and there is a drop-off to your left and cliff face to your right. I almost had a head on collision with another rider in this stretch while trying to catch up to the rest of the group after helping Kelly with a dropped chain.