I will be staying in Spain for 1 month , another 1 month in Italy and another month in France , and before the 90 days ends , will go to Denmark . My question is when can I come back to EU countries I mentioned above after a month in Denmark/Switzerland/Germany (or any other continental EEA country)?
I am Canadian and can travel as a non-visa national throughout the EEA.
The Schengen Area consists of 26 Member States, including Denmark, Switzerland and Germany. It doesn't directly overlap with the list of EU countries as some EU members are not part of the Schengen area (UK, Ireland) and some Schengen members are not EU members (Switzerland, Norway).
Traveling between any of the Schengen area countries contributes to your 90/180 limit, so you can't reset it by hopping to a different state. However it is possible to travel outside the Schengen area (e.g. to UK) and stay there for long enough to reset the Schengen days counter.
For more information on how the 90/180 days rule works, see this answer from our related question.
