“The Inyo portions of the South Sierra, Golden Trout, John Muir, Ansel Adams, Owens River Headwaters, and Hoover Wilderness Areas remain closed through December 1, 2020.” You can drive to Onion Valley or Horseshoe Meadow and hike to the wilderness boundary. That is about two thirds of a mile from Onion Valley and less than a quarter of a mile from Horseshow Meadow trailheads. You cannot hike to any of the destinations you mentioned.