The calculated distance (air line) between La Guancha and San Sebastián de la Gomera is approximately 34 miles respectively 55 kilometers.
By car or train, the actual journey to San Sebastián de la Gomera is certainly longer, as only the direct route (as the crow flies) between La Guancha and San Sebastián de la Gomera has been calculated here.
Air line (approximately)
55 kilometers
30 nautical miles