Among PnP Samples there is a solution for using Google Maps. Great solution where where you can pick a point on a map and define a spacial area on the map. Unfortunately it is a sandbox solution. I rewrote it to a code based template with SPMeta2 Framework. Now it can be installed on any site very easily, without needing UserCode Service and a cumbersome process of uploading a wsp package and activating it.

To get longitude and latitude can be tricky at the first time. There are many ways to do this, e.g. getlatlon.com. Good enough, but not so practical if you want to collect many coordinates. You can’t search after street names, you only can scroll and drag. Another way is to use javascript to show the longitude and latitude. See this example. This works in all web browsers.Just find your object in Google Maps and paste this javascript in URL bar: javascript:void(prompt('',gApplication.