(Last Update: 10.01.2026) IMPORTANT NOTE: After 70 years, the Municipality of Paris has made a major change in bus routes as of April 2019. City bus number 42 also had its share of this change. The new route does not start from Gare du Nord, but from Gare Saint Lazare, and it does not follow a wonderful track like before. I'll keep this post by saying "it's still not bad" but