@paulo57509 I took La Honda Road from San Gregorio to Skyline and at the intersection of Skyline and Pagemill I turned right on Alpine Road and stopped at the first trail parking lot to check out Alpine Pond. Then took Pagemill Road north-east. Montebello Road is gated and looks like a private road. Montebello should be at least partially accessible from the other end because there is the Picchetti vinery. Didn't want to possibly trespass so proceeded on Pagemill. Eventually got on 280 North.
Going south on 1, Linda Mar Beach.
Still on 1, approaching Devils Slide and the tunnel.
La Honda Road
Alpine Pond at Skyline and Pagemill Road.
Crossing under Alpine Road on the way to the parking lot from the pond.
Pagemill Road
Silicon Valley in the distance
On 280 going north. Many cars were going over 100 mph.