"Wir wollen die Reise fortsetzen."
Übersetzung:We want to continue the journey.
The travel -> The act of going from one place to another (The travel to London was easy.)
The trip -> The entire event of travelling and visiting another place. (The trip to Spain was fun.)
The journey -> Like a trip but typically longer, typically conveys some sort of difficult or hard travel. (He went on a journey around the world.)
The voyage -> Like a journey, but typically used for journeys at sea (or in space) and those to undiscovered or uncharted places. (The pilgrims' voyage to the New World was long and arduous.)
The tour -> A trip but in which you visit scheduled places. (He took a tour of Europe with his sister.)