I've just enabled an experimental feature that shows several of the US Adventure Cycling routes overlaid on the map. Right below the map there's a checkbox to load the Adventure Cycling routes. Try it out!
The overlay for this is kind of rough, as you'll see. It's created by processing the GPX files that Adventure Cycling publishes on its website, and I was unable to get them perfect. You'll see quite a number of squiggles that don't belong there. However, if you're looking for hospitality along your route, you can probably figure out where the hosts are.
If you would just like to view the Adventure Cycling maps on Google Maps, Try this link.
Thanks to Jeff Lee for the basic idea and inspiration.
Enjoy! Let me know if you have questions or ideas. If any of you are able to construct a higher-quality KMZ file for the overlay using Google Earth, let me know and I'll use it. If you're interested in fiddling with it, the KMZ file is at
and the various files (including the GPX stuff from Adv Cycling) is in a zipfile at
Just make a better KMZ file and email it to me (see the contact page).