The calculated distance (air line) between Getafe and San Martín de la Vega is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to San Martín de la Vega is certainly longer, as only the direct route (as the crow flies) between Getafe and San Martín de la Vega has been calculated here.
Air line (approximately)
18 kilometers
9 nautical miles