The calculated distance (air line) between Frankfurt am Main and Raon-l'Étape is approximately 145 miles respectively 233 kilometers.
By car or train, the actual journey to Raon-l'Étape is certainly longer, as only the direct route (as the crow flies) between Frankfurt am Main and Raon-l'Étape has been calculated here.
Air line (approximately)
233 kilometers
126 nautical miles