How to get administrative boundaries in a GPS format, ideally in .igc?

General talk
1

Thanks in advance

2

when no answer here → help.openstreetmap.org

3

Look at gpsbabel for converting to various GPS formats.

Administrative boundaries are available from www.geofabrik.de/downloads usually in Shapefile format.

ogr2ogr is probably the most useful way of getting from GIS to GPS formats.