I have a run coming up this weekend and will be receiving the route so I can add the waypoints into the nav. Does anyone know how many waypoints I can enter into the current system?

Also, Garmin makes software to import directions/waypoints into their systems. Is there any way to get this info into the factory nav?

 

I presume you are talking about the new Garmin in built system?
I've found no way to import them
But you can add then directly to the Nav
I tend to use my Tom Tom with ITN files from Autoroute