Believe it or not, I went out today and rode (93°F here in Virginia!). I drove out to Farmville, VA southwest from Richmond, and rode the "High Bridge Trail" over the Appomattox River. It’s a very, very, extremely easy, trail. I guess you wouldn’t even consider it a MTB trail. It’s a totally flat, abandoned railroad bed, that was taken over by the park system and modified to be a hike, bike, and horse trail. I packed 2 bottles of gatorade, a sandwich, and a full water bottle on the bike.
Here is a photobucket slide show that I made showing the trail. I only went from the River Road entrance, over the "High Bridge" down to the Rice, VA entrance, and turned around and came back. Total trip was a little over 9 miles.
http://s137.photobucket.com/albums/q215 … =slideshow
As seen in a few of the photos, I put on one of those rear bag touring racks made by Topeak, so I could carry everything, including my digital camera, wallet, cell phone, keys, etc…etc…
Edit: Here’s a link to the High Bridge Trail: http://www.dcr.virginia.gov/state_parks/hig.shtml