Noted at http://www.gpsreview.net/multi-destination-routing/
See if those models are still out there and try that company's product.
I have a motor route paper delivery which consists of multiple stops, and want to know which GPS system will allow a person to add multiple stops, with possibly an alert that sounds at arrival of each stop. This is a large motor route and will take time to learn. Thought a GPS System like that would help until I got the route down. If there is such a thing available at all, can someone please let me know