Griffith Park via a Downtown route that we did a few years back, but we may include the Hollywood Sign, via Lake Hollywood. Here is the route without the Hollywood Sign:
https://ridewithgps.com/routes/31475911
To add the Hollywood Sign, we go up Barham to Lake Hollywood Dr., around the lake, up Tahoe Dr. and past the sign viewing area. Then back down through Beachwood to real Hollywood and back over to the Westside.