Santorini is a unique island where "walkability" depends entirely on your specific location. While the central areas of towns like Fira and Oia are pedestrian-friendly, the island's topography is defined by steep volcanic cliffs and thousands of narrow stone stairs. Walking the famous 6.5-mile path from Fira to Oia is a popular "moderate" hike, taking roughly 3 to 4 hours, but it requires sturdy footwear and high sun protection. For those with mobility issues, the "caldera" side of the island can be quite challenging due to the constant incline and lack of elevators in traditional cliffside hotels. Conversely, the beach towns like Kamari and Perissa on the eastern side are flat and easy to navigate. In 2026, it is highly recommended to use the local bus system or rent an ATV to move between towns, as walking the main roads is dangerous due to heavy traffic and lack of sidewalks.