The calculated distance (air line) between La Tour-de-Peilz and Schaffhausen is approximately 120 miles respectively 193 kilometers.
By car or train, the actual journey to Schaffhausen is certainly longer, as only the direct route (as the crow flies) between La Tour-de-Peilz and Schaffhausen has been calculated here.
Air line (approximately)
193 kilometers
104 nautical miles