^ Yah Sunday. I will ride up the front side descend to camp William then ride up the back. or who knows I might go to Baldy village if it's warm.
I start in Corona so I don't get to GMR till around 10:am
You'll also need to know that GRR means Glendora Ridge Road, which intersects with GMR and continues on up to Mt. Baldy. And then there's ACH which means Angeles Crest Highway, and AFH, Angeles Forest Highway, both ways to reach Mt. Wilson. There's others.