The red brick road in The Wizard of Oz primarily leads to the Emerald City, which is the home of the Wizard of Oz. In the story, Dorothy is advised to follow this road to find the Wizard, who she believes can help her return home to Kansas. As she travels along the road, she encounters various characters who join her on her journey, including the Scarecrow, the Tin Man, and the Cowardly Lion.
The road symbolizes the journey of self-discovery and the pursuit of one’s goals. Each character she meets along the way is also seeking something they believe they lack—brains, a heart, and courage—highlighting the themes of friendship and personal growth throughout the story.