The petersburg battlefeild state park, is a great after work ride. These trails are ridden primarily by millitary members becase it's convienently adjacent to Fort Lee. Many rolling hills about one bike wide and multiple terrain featurs. Switchbacks, climbs, and descents by no means begginer though. From gravel, multch, pete rock, sand, and mud. It's a great time!
How to get there:
From Richmond Va. take I-95 south to 295 south and take exit 9B. Turn right onto route 36 and follow the signs for about 2 miles. The entrance is on the right side (very easy to find, Historical landmark, if lost follow signs)
There is a $2.00 park entrace fee if you enter by car.