Sanibel Island measures roughly 12 miles long and three miles across at its widest.
Sanibel Island has two main roads that parallel each other. Periwinkle Way, located at the four-way stop immediately past the Visitor Center, is the main thoroughfare. West of the causeway, it leads to the island’s shopping and dining district. Follow it east and you’ll pass a quieter commercial section, ending up at the Sanibel Lighthouse and its beach. Gulf Drive, the other main route, roves past resorts, beaches, and homes at the water’s edge. It is segmented into East, Middle, and West Gulf Drive.
Sanibel Island and Captiva Island Visitor Guide Maps.