Hello! Reinforcing cool_atmosphere’s post above. I soloed last year, NOBO from Cottonwood Pass. I only had two nights (of 21 total) where folks were not camped nearby (within sight). Definitely made some nights less lonely, even if I did not talk with my neighbors! A few nights were at some overly crowded sites. I ended up camping with my trail family for most of the last two weeks. So I think you can almost always find a popular site where others are camped. If you want solitude, easier to venture a little farther off trail or beyond the obvious first sites you see to find more privacy. No guarantee you will find a trail family, but odds are you will have lots of great company along the way! I met three other wonderful folks, and while we did not hike together for the most part (deliberate) we all camped together the last two weeks. Regardless, I think you will not feel alone ( I saw probably 25-50 people per day on average). I hope you have a fantastic trip!!!