The Targets (or Locations) page now has an Export function! Click the Export button to create a tab-delimited file including location IDs, names, map search information and latitude and longitude.
All visible locations are included in the export. This means that if you filter the search, you will export only the locations that are shown.
The export file has a file type of .csv, but is actually a tab-delimited text file. If you are using Excel, you may need to open a blank spreadsheet first and then import the data (Data -> Get Data -> From Text/CSV).