I'm assuming what you would want is a custom field that integrates with Google Maps so that it stores the long/lat of the place markers. As you are aware this isn't built in functionality, however Gravity Forms can certainly be customized.
If you know enough PHP and are familiar with how WordPress hooks/filters work you could even create your own Custom Field in the Gravity Forms form editor itself.
Currently we do not have a tutorial available that explains how to create a custom field, however we are currently reviewing a tutorial written by a 3rd party and once that tutorial is published we will write a blog post about it and promote it on the support blog. Keep an eye out for it. It will hopefully be later this week.
Posted 8 years ago on Monday December 19, 2011 | Permalink