Good introduction to Flagstaff for those getting used to the high elevation. Relative to surrounding trails, you'll do less climbing and you'll get used to the rocky terrain. Nice views along the trail.
The trails in this area are mostly buff singletrack through the ponderosa pine. The turns are never too tight, and the climbs/descents are never too steep, making this a very nice ride for beginners, or a quick blast for more advanced riders wanting to squeeze something in after work.
There are a few additional loop options in the area, but it's hard to get lost. Just follow the trail and go.
The Walnut Meadow Loop section will be more gratifying than the Campbell Mesa or Continental Loop
for the experienced rider as it has more flow.