The calculated distance (air line) between Nāḩīyat Saddat al Hindīyah and Tikrīt is approximately 136 miles respectively 218 kilometers.
By car or train, the actual journey to Tikrīt is certainly longer, as only the direct route (as the crow flies) between Nāḩīyat Saddat al Hindīyah and Tikrīt has been calculated here.
Air line (approximately)
218 kilometers
118 nautical miles