Was pretty fun, but the trails out of Port Costa and through Briones were severely rutted, making climbing difficult and descending even more unpleasant. Still super happy to mix it up a bit, but I'm not hurrying back out there and I ultimately wound up bailing about 2/3 the way through.
dstein, to answer your question, I was running Hetres (650bx42) with a steel road frame. Letting some pressure out helped, of course, but not to a great degree. Definitely glad to have the much needed rainfall we've been getting, but combined with the livestock using the trails, it made for a super bumpy, exhausting ride. There was a guy riding with us for awhile with a full suspension MTB, and he was even finding it a pain in the ass.