I thought this route would be an easy day trip to get to Bowback. Just remember even after you reach the plateau you've climbed 3500 feet from the trailhead and still have nearly 2000 more to go. I was whipped by the time I got to Sylvan and even Elk mountain seemed like it would turn into dark return to the car. I bailed out and got back down to East Rosebud by 7 and just made it to Absarokee's Dew Drop Inn for a burger before they closed. Others might do just fine, but consider yourself warned.
I bivied near the highest tarn in upper snow creek drainage and climbed the snow to the saddle between Inabnit and Bowback. I ascended Inabnit and then proceeded to ascend the west ridge of Bowback Mountain and run the East Rosebud Plateau over Elk Mountain and Sylvan Peak and descended the north side of Sylvan.