Henry Coe is by far the largest park listed on this website and one of the remotest. While not all of it is open to mountain biking, its more than 130 square miles of total land area easily dwarfs any individual city around the Bay Area (like San Francisco, at 49 square miles) with the notable exception of San Jose. It features many excellent bike-legal singletrack trails, though it'll frequently make you work hard to get to them. Its fire roads are notorious for steepness.

This particular route has you starting from the Hunting Hollow parking lot. The first thing you do is to cover the roughly 2 miles of (fairly flat) distance on pavement to the Coyote Creek Entrance, before starting the "real" ride. Actually there is parking available for a handful of cars right at the Coyote Creek Entrance, as well, so you might want to check there first and then drive back to Hunting Hollow to park there only if you don't find anything available.

The "real" ride consists of a mostly singletrack climb and descent. It's a short one. The climbing portion traverses mainly Anza and Jackson trails via many switchbacks. The climb is a serious one. It brings you to the brief ridge-top segment of the ride where you ride a few short segments of fire roads and where vista points in various directions are available along the way. Then the steep but fun descent on Dexter Trail begins. The Grizzly Gulch Trail that follows may formally qualify as a fire road, but it's so technical through most of its length that it's no less fun than a singletrack descent. In fact, one very short extra-steep segment has a short bypass trail along the side.

One other thing Henry Coe is known for is the (seasonal) prevalence of ticks. So, before you ride here during tick season, you might want to educate yourself a little bit on the kinds of places where ticks may be found, what time of year they're most active, what's their behavior once they get on you, etc. Also, frequent stops during your ride to look for ticks on your body is highly recommended, and it couldn't hurt to wear bug repellent (though I wouldn't rely solely on that).

Finally, due to its inland location, the weather at Coe during summer months can get much hotter and drier than many other riding locations around the Bay Area. When you also consider its remoteness, the importance of coming prepared with extra reserves of water goes without saying, and planning your riding range carefully during the hotter months would be wise.