9 miles of blue-rated singletrack similar to EVMA trails around Williamsburg, but something different than you ride all the time, and it has a cool half-pipe feature and a dirt skills area.  Check it out on Trail Forks.  

10:00 AM meeting time in the parking lot (with a nice bathroom!): Leakes Mill Park, 3951 River Road West, Maidens, VA 23102.