Google IS tracking you, down to the square foot. And this is even when you tell them to turn off location services.
But you can make it stop (we think). This talking head on television tells us how.
To delete location tracking Google already has.
On myactivity.google.com, look for any entry that has a location pin icon beside the word “details.” Clicking on it. Up pops a window that includes a link that says “From your current location.” Clicking on it will open Google Maps, which will display where you were at the time.
You can delete it from this popup by clicking on the navigation icon with the three stacked dots and then “Delete.”
Some items will be grouped in unexpected places, such as topic names, google.com, Search, or Maps. You have to delete them item by item. You can wholesale delete all items in date ranges or by service, but will end up taking out more than just location markers.