San Francisco Bay Trail over CA 92 Loop is a 8.4 mile lightly trafficked loop trail located near Hayward, CA that offers scenic views and is good for all skill levels. The trail is primarily used for walking and is accessible year-round.
This is the official route of the SF Bay Trail from the Hayward Shoreline Interpretive Center to the Eden Landing Ecological Reserve. The trail is roadway from the interpretive center to the pedestrian bridge over Highway 92. From the bridge to the Eden Landing parking lot, the trail is a gravel/dirt path along the salt marshes. It's not worth walking by itself, but it does connect the two great areas.
I really enjoy biking on the bay trail. This isn't the most scenic track. I would prefer to start at the interpretive center and bike further north, perhaps as far as the marina and back. The trail path is more rocky south of 92, so I try to avoid it with my bike.
A quick walk from one great area to another over Highway 92. Not much to it, but it does mean you don't have to get back in the car.