The calculated distance (air line) between Paray-Vieille-Poste and Reims is approximately 85 miles respectively 136 kilometers.
By car or train, the actual journey to Reims is certainly longer, as only the direct route (as the crow flies) between Paray-Vieille-Poste and Reims has been calculated here.
Air line (approximately)
136 kilometers
73 nautical miles