The title "The Hundred-Foot Journey" refers to a significant symbolic turning point in the protagonist Hassan's life, rather than a literal long distance.
Though physically a very short distance, perhaps even as brief as a hundred feet, this journey represents the pivotal moment when Hassan steps out of an Indian kitchen and into a French one. This seemingly small move marks his profound transformation and the true beginning of his journey to becoming a fully realized chef, signifying a monumental shift in his culinary and personal identity.