The calculated distance (air line) between São Caetano do Sul and Ribeirão Pires is approximately 11 miles respectively 17 kilometers.
By car or train, the actual journey to Ribeirão Pires is certainly longer, as only the direct route (as the crow flies) between São Caetano do Sul and Ribeirão Pires has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles