So I surfed a little more around the Gmap Pedometer and went to the Message Board (Mileposts) to get the full skinny. Then I clicked Check This Route! There are a billion posts there describing routes all over the world. One post describes the infamous San Francisco Wiggle:
The Wiggle is a way to get from the flatter eastern part of SF to the flatter western part, minimizing the hills that have to be climbed. It mostly follows SF Bike Route #30.
So there you go. Now you really don’t need to drive anymore.
If I walk this route, I’ll only burn 173.17250857643734 calories.