This is a network of trails that works its way thru the pines and cedar along the foothills on the eastern flank of Santa Fe, from the Hyde Park Road area on the north side to the Atalaya hiking area on the south. Expertly laid out, this network offers lots of entertainment and plenty of variation to keep you interested. This network is a jewel that any city would be proud of. There is a trail map posted at every intersection so getting lost is virtually impossible. There aren't many technical obstacles, and adrenaline junkies may find themselves disappointed with the lack of speed, drops, or difficult obstacles, but if you want a great singletrack ride easily accessible from town then you likely be very satisfied. The south end near Atalaya is really more oriented to hiking and is more of a cardio-challenge. For some good speed and fun rollers pick up trail going southwest from the north parking lot and fly down thru station 12 (watching for and respecting other trail users, of course).
If you can't get their by pedaling the major parking areas are: North, off Hyde Park Road on Sierra Del Norte; Central, the Nature Conservancy trailhead near the junction of Cerro Gordo and Upper Canyon Road, or; South, the St. John's trailhead on Camino de Cruz Blanca. But really, as long as you don't offend a property owner you can get on the trails practically anywhere.
http://www.singletracks.com/item.php?c=1&i=1850