I had several possible routes to San Francisco. Going via Santa Rosa would probably be easiest, but that would be more urban. I chose to continue down the Shoreline Highway instead. I assumed that it would similar what I had done yesterday, but it turned out that this segment had a more tedious elevation profile: the hills come one after another such that you never get rest or gain speed. Add in a nasty headwind on the section where it jogs back out to the coast, and I was feeling pretty demoralized. I chatted with a cycle tourist who was familiar with the local conditions, and he validated my plan to turn left at Olema through Samuel P. Taylor Park instead of continuing down the coast to Stinson Beach, which would be incredibly windy. Passing Samuel P. Taylor park at 6 pm, I faced a choice. I could stop and set up camp quite comfortably — and that would have been the sensible thing to do I were going all the way to Southern California. But with my destination being the Bay Area, I chose to press on for a late arrival into San Francisco. I knew that the Marin Headlands side of the Golden Gate Bridge was hilly, and that it would be getting dark. But the ferocious cold gusty crosswinds put up a final test of my resolve as I approached and crossed the bridge! The trails through the San Francisco Presidio were a bit of a maze, with poor signage in the dark. I gave up on following the satnav guidance, took the roads, and followed my intuition instead towards the Embarcadero BART station. (This ride is part of a multi-day trip: https://ridewithgps.com/ride_reports/8753)