The trail is not technical, but it is reasonably fun as there are quite a few small hills that you can get some decent speed over (30mph+ by the water tower). There is no cover for most of the trail, and it's quite dusty. There are water bars by the water tower that can be jumped for something to do going down hill. Couple this ride with the East Boulder trail (parking lot just west on Valmont, on the south side) and you'll get a 12 mile ride.
From 95th Street (Hover in Longmont), go south to Valmont Road. Turn west on Valmont, and less than 1 mile there will be a parking lot on the north side of Valmont.
http://www.singletracks.com/item.php?c=1&i=1863