The calculated distance (air line) between Isernhagen Farster Bauerschaft and Marienthal is approximately 76 miles respectively 123 kilometers.
By car or train, the actual journey to Marienthal is certainly longer, as only the direct route (as the crow flies) between Isernhagen Farster Bauerschaft and Marienthal has been calculated here.
Air line (approximately)
123 kilometers
66 nautical miles