travel-gmap3 is an open source a solution built for WordPress to display your Google Maps with the JQuery plugin Gmap3
on your WordPress as a Widget or in a post. (You have to draw your map on Google Maps (like a road trip)
and copy the link on the plugin administration)
Format : http://maps.google.co.nz/maps/ms?msid=…fbd972e&msa=0&output=kml
How? http://maps.google.co.nz > My places > Create new map > (draw lines of your trip) > Copy the link here (icon link on top right)
Major features include:
travel-gmap3 use JQuery 1.6.1 and the JQuery plugin Gmap3