The calculated distance (air line) between Frankfurt am Main and Schwäbisch Gmünd is approximately 104 miles respectively 167 kilometers.
By car or train, the actual journey to Schwäbisch Gmünd is certainly longer, as only the direct route (as the crow flies) between Frankfurt am Main and Schwäbisch Gmünd has been calculated here.
Air line (approximately)
167 kilometers
90 nautical miles