[FONT="]If you are referring to the Alpine Loop, out of Durango CO, then yes, it's a very worthwhile trip.
We did it two summers ago, on the way back from Wyoming.
Not very challenging but incredible scenery and high passes, one over 13,000 feet. There was a bit of traffic in some areas with a lot of ATVs and rental Jeeps. It's a well know trail and Federal Scenic Byway.
The area around Durango and Ouray is loaded with all sorts of 4X4 trails.
Get one of the off-road guidebooks for more information on the different trails. You are going to have fun[/FONT]