I did this RR last year. They had to reschedule due to fires and I wish they would have pushed it back ever further. It was dreadfully hot [they announced 110 on the back stretch! ]

Aside from that the course was a mostly rolling hills .. with nice flats on the back section .. and an uphill finish. There is one little kicker at the start of the lap .. a few rollers .. then a steepish hill [for about 1 mile max] followed by a steady uphill finish

I'm not the best person to answer whether the hills were steep or hard [b/c i love clmibing]. But they were all about 5-6%.

Hope this helps! I might still have my garmin info if you want the nitty gritty of it.

cheers,
eva