The calculated distance (air line) between Le Pré-Saint-Gervais and Reims is approximately 78 miles respectively 126 kilometers.
By car or train, the actual journey to Reims is certainly longer, as only the direct route (as the crow flies) between Le Pré-Saint-Gervais and Reims has been calculated here.
Air line (approximately)
126 kilometers
68 nautical miles