The final dated stop must be a show city other than home. The return drive happens afterward.
Estimated mileage uses latitude and longitude and makes no external routing calls while routes are built. Real mileage first builds a limited set of routes, then validates those completed routes against the road-routing service.
Choose a preference only when you want one category shown first. Both categories are generated either way.
Choose one or two main genres. Subgenres are optional.
Add a city and optionally assign it to a date. A stop without a date is tested on every distance-feasible date.
Broad searches, especially with Real mileage, may run for up to five minutes before returning the best routes found.