The calculated distance (air line) between Santa Quitéria do Maranhão and Teresina is approximately 110 miles respectively 177 kilometers.
By car or train, the actual journey to Teresina is certainly longer, as only the direct route (as the crow flies) between Santa Quitéria do Maranhão and Teresina has been calculated here.
Air line (approximately)
177 kilometers
96 nautical miles