Rode from Tennessee Valley with Jim. Did a really fun singletrack at the top of Miwok I'd never ridden before. Then Diaz Ridge down to Muir Woods, where it had just had its opening ceremony. Saw Austin, Yuri & Matt on the descent, then Owen & Kathy. At the trailhead Jim had to go. Saw Sassan & Mark at the same time. Rode back up Diaz Ridge with them, then road to Tenderfoot and down with them. Had tea and cookies (seriously) at the Depot, talked with Roger Marquis for a while. Mark & Sassan had to go. Rode up Railroad Grade by myself, meant to take Old Stage to Coastal but accidentally went left on Gravity Car. Came upon a huge group, first Joey Carlin, then Matthias called me. I did a u-turn. Erika was there too. Matthias told me it was a birthday ride for Den Satake, they were going to Old Stage, then Coastal, then the Pelican for beers. That was what I meant to do, so rolled with them. Talked with Den, Matthias, had a nice ride, ripping descent on Coastal, black & tan with the group, then said my provisional goodbyes (maybe go to a birthday party later?) and rode through the Zen Center, up Middle Green Gulch to Coyote Ridge to Miwok to my car. Great day! Rode the Sultan. Except for a loose / noisy headset it was great with 30psi Ardent 2.4's. Made some video with the Contour HD cam, but had it pointed down too much.