Yeah, for that route. Seems likely I can get into Italy in July so just working out a more realistic itinerary as my current one is just arbitrary chops based on towns not distance or elevation.
It works out quite well though with 3k of gain every 100km. We split it up based on not sleeping above 1000m altitude if possible, since we were camping most times
RWGPS does that, simply select a portion of the route and it gives you the sub totals
EDIT: if this is for the TNR I have all of that done already in a super geeky spreadsheet ;)