The 800 and 810 do not have waypoint limits per se in normal use as most routes and courses created as gpx files do not contain any waypoints but rather have track points. There can be many 1000's of track points in a course.
The 800 and I suspect the 810 do though have a waypoint limit of 200 but in 99.9% of cases this is irrelevant as they are not used or needed unless deliberately added to a gpx file.
My friend routed from London to Rome without any issues.
I have a gpx file of the "way of the roses" 273km and 3823 track points, this routed me ok on my 800.
The 800 and 810 do not have waypoint limits per se in normal use as most routes and courses created as gpx files do not contain any waypoints but rather have track points. There can be many 1000's of track points in a course.
The 800 and I suspect the 810 do though have a waypoint limit of 200 but in 99.9% of cases this is irrelevant as they are not used or needed unless deliberately added to a gpx file.
My friend routed from London to Rome without any issues.
I have a gpx file of the "way of the roses" 273km and 3823 track points, this routed me ok on my 800.