Help getting from I-5 to Hwy 101 from Az to San Francisco

46 is light rolling hills, no steep grades. On I-5 you'll have a long steep grade from Castiac up to Lebec then downhill to Grapevine. One option is to take 126 which is fairly flat to 101 then north. 101 has a 7% grade, 5 miles long north of San Luis Obisbo. I find this grade much easier and shorter than Grapevine. 101 is very scenic.