We will be in northern Italy, in late July . Are there any ferries that run from Genoa to Monte Carlo ? If there is one how much for a round trip.
The Rome2Rio site does not show a ferry as an option. https://www.rome2rio.com/map/Genoa/Monte-Carlo
The AFerry site shows several ferries out of Genoa, but not to Monaco. https://www.aferry.com/genoa-ferry.htm