When you're planning your visit to Subway, you could take municipal transportation to the station Yountville Station, which is the nearest station at 630 meters distance to the restaurant.
A complete menu of Subway from Napa covering all 35 menus and drinks can be found here on the card. For changing offers, please get in touch via phone or use the contact details provided on the website.
The Subway is indeed not a bad choice, which is also seen by the previous guests with an average rating of 3.1.