The calculated distance (air line) between Le Creusot and Marne La Vallée is approximately 163 miles respectively 262 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 Le Creusot and Marne La Vallée has been calculated here.
Air line (approximately)
262 kilometers
141 nautical miles