Malibu canyons. Ride/drive up PCH and take your pick. Many are easily linked. You'll find nothing better. Anywhere.
If I were choosing: ride Latigo and go from there.
Another fav or mine: Park at Zuma Beach. From there ride west (left) on PCH. Up Encinal Canyon (connecting Decker) to Mulholland. Turn left and ride Mulholland all the way back down to PCH and then back to Zuma. If you like great, fast, tech descents...go down Decker to PCH. Hang on tight.