This study investigated the self-sufficiency of verbal route directions for blind navigation with prior exposure on an outdoor campus environment. Three blind participants were given verbal directions for two routes and asked to complete the routes independently after an initial training run with an instructor. The time and errors to complete the routes decreased with additional attempts, showing the benefit of prior exposure. However, the directions could be improved with more localization and contingency instructions to prevent common errors. The study provides insights into how verbal directions and familiarization affect blind navigation success.