I think locations are quite unclear in the series, so I made a map where I think they are : r/vikingstv
Episode 49: Vikings Among the English and French | The History of English Podcast
Paris & the Heart of Normandy Animated Map | Viking River | So many enchanting destinations, where do you most want to go? Let us show you the best of France: https://bit.ly/3FGYRqC
An Atlas of the Vikings – GEOGRAPHY EDUCATION
Viking | History, Exploration, Facts, & Maps | Britannica
In the Homeland of the Vikings with GuideCompaniet | Guided Tours | Avaldsnes | Norway
Ragnar Lodbrok: The Legendary Viking Who Besieged Paris