I am planning a trip to Japan's Shikoku island to bicycle the 88 temple pilgrimage route. My Gamin Edge 705 does not have Japan map on it.
What tools do you use to chart the route? What type of data do you store the file in: route, track, or course? What problems have you had?
I plan to use an online mapping service, like ridewithgps.com. Once the route is complete, I will transfer it as GPX track.
I tested this in the US and seems to work. I removed the maps from the unit. Charted a route. And tried to navigate it.
Everything worked fine. I was able to follow the route without problems. Instead of specific prompts, like "turn right on Main Street", the GPS displayed more generic ones like "Go South". And of course there was no map in the background.
What is your experience with using the GPS without a map?