I've been creating some scenic drives with Google My Maps but it doesn't look like Google Maps has the ability to navigate with a saved map route. I see that I can import My Maps KML/KLZ data into Garmin Basecamp. I exported a route in KLZ format and was able to create a route in Basecamp with the routes and points of interest and then upload the entire route with the points of interest to the 8GB SD card my Nuvi 250. I've added a 8GB SD card for the add-on Lifetime maps.
When I checked my Nuvi 250, the points of interest appear in my Favorites but I can't find the route anywhere. How do I navigate with my route in this device?