Gouel provides an interface to create maps. You can create trips with a list of points and a route (line). You can link points with your posts.
Gouel works with the multilingual plugin WPML. You only have to create the map once, for the principal translation. The map will appear for all the other translation.
<h3>Known Issues</h3>
Using the Opera browser, the routes don’t show (the markers do, though).
<h3>Future Improvements</h3>
<ol>
<li>custom icons for markers</li>
<li>shortcodes</li>
<li>auto-localization on add/update post</li>
<li>wysiwyg editor for marker description</li>
<li>templates for description</li>
<li>variables for description and title (such as post adress, post title, latitude, longitude, …</li>
</ol>

Gouel

Gouel provides an interface to create maps linked with your posts.

JavierMendezPWG

You can configure your locations into a page with shortcode [simplegmaps], you only must add a list of parameters, 
latitud (latitude), longitud (longitude), zoom, tipomapa (TypeMap), titulomarker (Title of the marker), alto (height of div), ancho (width of div).
Example: 
[simplegmaps latitud = “40.430224” longitud = “-2.416992″ zoom=”13″ alto=”300px” ancho=”300px” titulomarker = “Hola Mundo!”]
Visit me:
web: http://www.programacionwebgalicia.com/
blog: http://programacionwebgalicia.wordpress.com/
facebook: https://www.facebook.com/pages/Programaci%C3%B3n-Web-Galicia/206144426132817
twitter: https://twitter.com/PWGalicia

SimpleGMaps

Place locations into div using Google Maps V3

Gouel vs SimpleGMaps