Past the cabins and up onto the Meysan Lakes Trail...
It gets warm (I don't do well in warm situations), so you may want to start up early. It's a lot of work, and some cross-crounty, to get all the way up to Meysan, but it is gorgeous up there.
The national recreational trail, which runs from the portal down to Lone Pine Campground, 4 miles 3120 feet elevation loss, one way top to bottom. First part in forest along stream, second part more open.