The calculated distance (air line) between São Domingos do Maranhão and Teresina is approximately 114 miles respectively 183 kilometers.
By car or train, the actual journey to Teresina is certainly longer, as only the direct route (as the crow flies) between São Domingos do Maranhão and Teresina has been calculated here.
Air line (approximately)
183 kilometers
99 nautical miles