Mag-5 or the Gemini Bridges Exit of Mag-7 is fairly intermediate. The typical route has riders descending down into the sandy gulch at the bottom of of the Little Canyon (Mag 5) trail and then climbing out via the Gold Bar Rim and Gemini Bridges road.
The Magnificent 7 or "Mag 7" is a series of trails that create a 26-mile point-to-point route. This route finishes with the Poison Spider. This very popular trail system can be found just north of Moab.