The standard route on Moran is the CMC route, starting at the CMC campsite.  But, this is not "car-to-car", which would be starting at the Jenny Lake Loop Road, and either walking/running around Jenny & Leigh Lakes, or canoeing the lakes (which is the usual mountaineer's approach). 

Erik Sanders describes the multi-sport (bike, swim, run) "Picnic": 

This is a challenging 17 mile mountain-top trail which travels over steep and rocky terrain with significant brush on the trail. Backpacking & primitive camping permits are available at Savage River State Forest Headquarters. The out and back variant is 34 miles and takes you back to your stating point. No directional preference.

Use: Hiking Only

Difficulty: Difficult