The calculated distance (air line) between Trélazé and Marne La Vallée is approximately 173 miles respectively 278 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 Trélazé and Marne La Vallée has been calculated here.
Air line (approximately)
278 kilometers
150 nautical miles