Muir Pass via Bishop Pass is a 35.6 mile moderately trafficked out and back trail located near Bishop, California that features a lake and is only recommended for very experienced adventurers. The trail offers a number of activity options and is best used from June until October. Horses are also able to use this trail.
This arduous trek leads to some of the most stunning and remote mountain vistas in the southern Sierra, scores of alpine lakes, deep canyons, and an unusual bungalow atop Muir Pass. Wilderness permit required for overnighters. No campfires permitted above 10,000 feet. Bear canisters required for backpackers.
I did this stretch in mid June of 15'. We did go further though. The hike from South Lake to where the switchbacks start up to Bishop pass is actually pretty moderate. Follows the lakes and isn't super steep. But the switches up to the pass are. Encountered a few drifts of snow in the upper sections but nothing bad. Over the pass and camped in Dusy Basin the first night. Then down to the bottom of Le Conte Canyon the next day and up river to Big Pete's meadow for the next night. The third day was up to Muir Pass, and it was a slog. Mileage wise it didn't seem like much, but walking wise it did. Just one of those days I suppose. Went down to Wanda Lake to spend our 3rd night. This was to be a loop hike as well but didn't pan out that way. We went as far as McClure meadow, which is absolutely beautiful. Evolution Basin is awesome too. Evolution creek thru McClure meadow is something to see. One of the most scenic stretches of the PCT/JMT.