INTRODUCTION: The importance of knowledge regarding both the anatomy and the structures of the skull base are cited in many neurosurgery and radiology papers. Therefore, the purposes of our study were to identify the surgical corridors and to determine the mean distances to help establish the safest distances for surgical approaches. METHODS: We examined 16 dry human skulls of unknown gender that belonged to the Anatomy Department Laboratory of Dokuz Eylul University Medical School. Foramen lacerum (FL), foramen rotundum (FL), foramen ovale (FO), hypophyseal fossa, anterior clinoid process (ACP) and posterior clinoid process (PCP) were determined in all skull bases and distances between these parameters were recorded with digital Vernier caliper which was accurate to millimeters. RESULTS: The FR’s distance to the ACP on the right side was greater than on the left side ( p: 0.41). The FO’s distance to the PCP on the left side was greater than on the right side (p: 0.010). There were no other statistically significant differences between the left and right sides. DISCUSSION and CONCLUSION: Although complications can occur, improved familiarity with the regional anatomy would lower incidences of death and morbidity during surgeries. While we believe that our morphometric and topographic evaluations will help guide surgeons and radiologists, wider series and multi-center studies should be done.