For all route creators there are some hard limits. And one of them is the 50 route point (of via points) in a routable route for Outdoor Devices.
The second almost hard limit is the amount of 255 directional point in and Route.
But BaseCamp for Mac does show me the amount of route points, but not the amount of route directorional points. The points are shown, but I have no idea how much there are and if i reach the limit when creating an route.
MapSource shows a nice counter in front of the the route directional points This should be very help full in BaseCamp also.
And you can build a limit (warning) in BaseCamp that routes are to long when there are more than 255 route directional points in a routable route.
(255 is including the normal route points)