Minor road caution coming in: The road is its usual rough self, but tolerable at 20-25 MPH. There is one very deep lateral trench that I think is unavoidable about one mile from the TH or 12 miles from the end of pavement. My Outback bottomed out (CLANG!) twice and it may have been worse when I went slower on my way out! It looks to be the road's whole width, maybe not. Also, Scatter Creek ford looks intimidating, wider and deeper than I have ever crossed it with its own gravel bar in the middle, but my Outback with its 8" clearance managed just fine as well as a couple non-jacked-up pickups and Chevy Traverse I saw at the TH.
My third try this season for Cathedral Rock/Peggy's Pond was successful (the road was snow-blocked back in March and May). The trail is in very good shape despite numerous blowdowns--they're easy to maneuver around. About an hour to Squaw Lake, another 1:05 to the Pass, and another hour to lunch above Peggy's Pond with multiple stops for photos.
Some snow patches above about 5,200 ft (before the pass) are pretty easy to cross and (more importantly) find the trail beyond. Snow was very firm for me and not too deep. Clearing the "cliff face" climber's trail to Peggy's Pond was a joy--no snow, simple, and Deep Lake below was the most intense blue-green. Between the little unnamed pond and Peggy's the trail disappeared for me and the myriad human and game trails just got mixed up and I ended up bypassing Peggy's entirely. No big loss because it was mostly frozen and snow-covered and I was headed higher anyway. Went up the S ridge which was all snow (based on some of the areas where rocks projected up through it, it was at least five feet deep). A really pleasant, hot, sunny snow climb for about 90 more minutes to 6,400 ft. Firm, no post-holing despite it being about noon. I was maybe 2-3 hours from the summit but not really prepared and getting tired, plus I figured the snow was only going to get softer and more tiring, so I headed down, content with the day's travels.
Very quiet out there--only one car when I arrived at 8, and two different ones when I left. Met one guy and his doggie on trail on the way down. Incredibly beautiful day. One of my all time favorite hikes--just remote enough and hard enough to discourage crowds of casual hikers, but not so bad that I couldn't hack it after two months of inactivity and a bum shoulder.
The only downside was the mosquitoes. Ate. Me. Alive. Even when I was moving at a decent clip they hung around for a while, but stopping was intolerable until I put on a long sleeve shirt and gaiters to cover my bare legs. Be prepared.