The calculated distance (air line) between Castell-Platja d'Aro and Terrassa is approximately 57 miles respectively 92 kilometers.
By car or train, the actual journey to Terrassa is certainly longer, as only the direct route (as the crow flies) between Castell-Platja d'Aro and Terrassa has been calculated here.
Air line (approximately)
92 kilometers
49 nautical miles