Lot of elevation gain!
Getting ready for a Coastal Trail Runs race on these trails in three weeks.... Pacific Coast Trail runs is doing another in two weeks. You should try one of their races: very fun, very low-key. Coastal Trail on this run was especially steep from Tennessee Valley southward. My "run" here was more "brisk hike".
Are you doing the Headlands 50? a colleague is thinking about it. Does Pacific Coast Trail runs have a website?
I was contemplating the marathon event @ Headlands 50 (50 is out of my range!) but I was convinced the 30 km Coastal Trail Runs race the week after made more sense. The jump from 30 km to 42 km is a big one. I've got the Half Moon Bay Marathon in Sept penciled in, though... http://halfmoonbayim.org/