You can upload a KML file to Google Maps:

 1.  Log in to your Google Account, and go to http://maps.google.com
 1.  Click on `My Maps`
 1.  Click `Create a new map`
 1.  Add a title and description
 1.  Click `Import`
 1.  Click `Choose file`, select the KML to upload, and then click `Upload from file`

![My Maps](https://www.askdavetaylor.com/3-blog-pics/google-maps-my-maps.png)

![Create a new map](https://www.askdavetaylor.com/3-blog-pics/google-maps-create-new-map.png)

![Import](https://www.askdavetaylor.com/3-blog-pics/google-maps-create-new-map-title.png)

![Upload](https://www.askdavetaylor.com/3-blog-pics/google-maps-import-kml-data-file.png)
 
Now you're done :)