I'm planning to do this loop tomorrow/friday morning/lunchtime/afternoon if anyone wants to join in.
The route is:
280 fwy to 92 (B-C)
skyline rd (35)(C-E)
la honda hwy 84(E-F)
1 hwy (F-G)
pescadero rd all the way back up through la honda, onto the 35 going northbound (G-H-E-C-D-B)
this would probably take 2 hours if you start and end at point B (the full loop).
I'm driving from San Francisco, if anyone wants to join me for this we can set up a meeting point.