Located in: [[France]]. The [[Loire River|Loire]] is the longest river in [[France]] that flows through the departments of [[Ardèche]], [[Haute-Loire]], [[Loire]], [[Saône-et-Loire]], [[Allier]], [[Nièvre]], [[Cher]], [[Loiret]], [[Loir-et-Cher]], [[Indre-et-Loire]], [[Maine-et-Loire]], and [[Loire-Atlantique]].