On a desktop or laptop computer, click on the Directions icon in the upper left-hand corner of the Google map to get the approximate drive time to Blue Grotto from your starting point. On mobile devices, just use your Maps app.
Allow an extra 15 minutes for unforeseen traffic, plus additional time if you plan to stop for food or gas. (Remember that, if meeting others, it’s better to be a little early than a little late.)
Once on the road, you can get turn-by-turn directions from either your phone or your vehicle’s GPS system.