The calculated distance (air line) between Saalfelden am Steinernen Meer and Sankt Martin is approximately 88 miles respectively 141 kilometers.
By car or train, the actual journey to Sankt Martin is certainly longer, as only the direct route (as the crow flies) between Saalfelden am Steinernen Meer and Sankt Martin has been calculated here.
Air line (approximately)
141 kilometers
76 nautical miles