The calculated distance (air line) between Château-Renault and Marne La Vallée is approximately 117 miles respectively 189 kilometers.
By car or train, the actual journey to Marne La Vallée is certainly longer, as only the direct route (as the crow flies) between Château-Renault and Marne La Vallée has been calculated here.
Air line (approximately)
189 kilometers
102 nautical miles