A marked path runs almost the entire length of Santorini's caldera rim, connecting Fira to Oia via Firostefani and Imerovigli. It's widely considered one of the best things to do on the island, and it costs nothing beyond good shoes and water.
What to expect
The full route covers roughly 10km and takes most walkers around three to four hours at an easy pace, with plenty of stops for photos and the odd café along the way. The path is largely unshaded, follows the cliff edge closely in places, and has some genuinely steep, uneven sections — comfortable, closed-toe shoes matter more here than on a typical resort holiday.
When to go
Early morning is the best window — cooler temperatures, softer light and far fewer people than the same path sees by afternoon. Starting in Fira and finishing in Oia in time for sunset is a popular plan, though it does mean tackling the hike's later, hillier sections in the day's warmest hours; starting at dawn from Fira avoids that trade-off entirely.
Shortening it
You don't have to do the whole thing — the Fira-to-Imerovigli stretch alone (about 45 minutes to an hour) covers some of the best views for a fraction of the effort, and buses run from both Imerovigli and Oia back to Fira if you'd rather not walk the return leg.
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