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Both "viajo" and "viajando" are forms of "viajar", which is often translated as "to travel". Learn more about "viajar" below.
viajar()
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
a. to run
El metro viaja hasta las dos de la mañana los sábados.The metro runs until two in the morning on Saturdays.
