This track provides a general sense of the length and elevation that could be expected for the stretch beyond Mt. Baldy Trail
From the top of Mt. Baldy, you descend a few hundred feet east along the ridge. At times there is a distinct trail, and at times the trail disappears, but as long as you follow the ridgeline toward the southwest ridge of Blacktail it is difficult to get into trouble. From the base of the southwest ridge of Blacktail, there is a use trail that leads up the mountain, just west of the ridgeline.
Once the majority of the elevation has been gained at a false summit, there is a human-worn trail that continues upward just below the craggy ridgeline. At about 4300', there is a large gendarme in the way to the east, which is a departure from the norm on this trail as you are normally on the west side of the ridge.
The final approach isn't completely straightforward, but if you look down the west slopes, you'll find the human-worn game trail that takes you down a little ways to an easy west face approach up to the summit.
Care should be taken when traversing along the ridge when there is still snow on the ground. The human-worn game trail traverses a few couloirs that could avalanche in the right conditions.