Here's some more detailed info from an email I got:

Day One: You’ll begin your two-day 120 mile “tour” of theSan Francisco Bay Area by riding across the awe-inspiring Golden Gate Bridge. From here you’ll head north through the charming bayside artist community of Sausalito, into Mill Valley and through many of the small towns that lie at the base of Mount Tamalpais State Park. After leaving Fairfax you’ll meander through the northwest countryside and farmland of Marin County, over a few challenging but very rideable hills, to the secluded coastal retreat of Walker Creek Ranch. That evening you'll share a wonderful dinner with all of your new best friends, followed by an intimate fireside chat with Tyler. Finally we'll head over to the Barn for a real knee-slapping, kick-up-your-heels shindig!

Day Two: riders will leave Walker Creek Ranch and head to the quaint fishing “village” of Marshall, nestled on the edge of Tomales Bay. From here you’ll head south along the bay, following the oyster farms, to Point Reyes Station, eventually making your way to the base of beautiful Mt. Tam and the tip of the Bolinas Lagoon. You’ll begin your climb up the western slope of the mountain, and if the fog stays away, you'll be greeted with amazing views of the Pacific Ocean and the California coast. Towards the top you’ll pass through a small patch of California Redwoods and continue your tour across the northern edge of the mountain. If Mother Nature is working in our favor, riders will look down to the Pacific to their right, and the San Francisco Bay to their left. Once at the top you’ll begin your decent down the mountain back into the town of Mill Valley and complete your ride by crossing the Golden Gate Bridge once again.