"We are going out to a journey in France, Germany and Spain."
Translation:אנחנו יוצאים למסע בצרפת, גרמניה וספרד.
In English we would say: "We are going on a journey to France, German and Spain."
In a construct like "Going out to a ____" the blank should be filled in with a location/site, like "going out to a bar." As for a country, you would say "going to France/German/Spain", omitting the word 'out' in this case.