Santorini is more than just a postcard of blue domes and famous sunsets. It is also a volcanic, mineral and luminous island, best explored on foot: along the edge of the caldera, through white villages and past black beaches and lava cliffs, and into the more secluded areas where summer eases off a little.
Santorini is so iconic that it can sometimes be hard to imagine it any other way: white houses perched above the sea, churches with blue domes, infinity pools and sunsets in Oia. All of this exists, of course, and it is all part of the island’s allure. However, the island is much more interesting when it is seen for what it really is: a volcanic landscape in the middle of the Aegean Sea.
Every climb, every dark rock and every black or red sandy beach serves as a reminder that the island was formed by volcanic activity. The caldera is more than just a beautiful viewpoint; it bears witness to an impressive geological history. The villages, beyond their photogenic beauty, serve as balconies, refuges and waypoints in this dry, rugged terrain.
Walking around Santorini in summer requires a little planning. The heat can be intense, shade is scarce, and some routes get busy. However, if you set out early, take plenty of water and plan your itinerary carefully, you can enjoy a very different experience to the typical tourist looking only for the perfect photo.
The great route: from Fira to Oia along the caldera rim
Santorini’s most famous walking routh connects Fira with Oia via Firostefani and Imerovigli. Known as the Great Caldera Trail, it is around 10 kilometres long and features urban sections, cobbled paths, dirt tracks and stunning views of the Aegean Sea and some of the island’s most spectacular landscapes.
The best plan is to start in Fira first thing in the morning. From there, the path naturally leads on to Firostefani. As you walk towards Oia, white houses, terraces and churches look out over the edge of the cliff, with the caldera always on your left.
Next is Imerovgli, one of the route’s most beautiful spots. Perched higher up and more secluded, it offers magnificent views of the volcano and the sea. If you have the time and energy, you can head towards Skaros Rock, an old fortified promontory jutting out towards the caldera. This is not essential for completing the route, but adds a wilder dimension to the walk.
After Imerovgli, the path opens up. There are fewer houses and terraces, and a broader landscape. The ground can be uneven with gravel and areas exposed to the sun, so it is important to wear comfortable shoes with good soles. Arriving in Oia is the final reward, although this is also where the crowds return. If you want to enjoy the route in peace, it is worth arriving before the busiest sunset hours.
Practical tip: allow between 3 and 5 hours depending on your pace, stops and the heat. Carry water from the start and use Fira, Firostefani or Imerovigli to buy anything you need, because after that there are fewer options until you get close to Oia.
Walking with the volcano beneath your feet
The most beautiful thing about this route is not just the view. It’s the feeling of walking along the edge of an island that was split by an ancient eruption. The caldera forms a huge natural amphitheatre, with the sea in the centre and cliffs rising all around. Step by step, Santorini reveals its volcanic nature, with layers of rock in ochre, black and red hues, dry slopes and paths seemingly carved from ash and stone. Even the white villages stand out more against that almost lunar, mineral background.
Akrotiri and Red Beach: lava, history and sea
At the southern end of the island, Akrotiri offers another way to approach volcanic Santorini. The area is renowned for its important archaeological site, but also for its landscape of cliffs, beaches and paths that show a more rugged side of the island.
Very close by is Red Beach, one of Santorini’s most famous beaches thanks to its reddish volcanic walls. It is not only a comfortable place to spend hours, but also a remarkable geological landscape, offering a striking contrast between red rock, dark sand and the intense blue of the sea.
Access may require walking along uneven paths. In some places, there are warnings about rockfalls, so it is best to check the situation before proceeding and to respect any local signs. Sometimes, it is best to simply enjoy the view and avoid swimming or approaching unstable areas.
From Akrotiri, you can also enjoy short coastal walks and stops at scenic viewpoints and nearby beaches. This is an area of particular interest if you want to experience more of Santorini than just Fira and Oia: it is less perfect, drier and rockier, but full of character.
Volcanic beaches: Perissa, Perivolos and Vlychada
Santorini does not have Caribbean-style beaches, and this is precisely part of its charm. Its beaches bear the mark of the volcano: black sand, dark pebbles and eroded walls, creating a landscape that feels very different from that of other Greek islands.
Perissa and Perivolos form a long stretch of black sand in the south-east of the island. These organised beaches have restaurants, sunbeds, beach bars and other amenities, making them perfect for those who want to enjoy a walk, a swim and a meal without any hassle. In summer, the sand can become extremely hot, so it is advisable to wear sandals and avoid walking barefoot during the hottest part of the day. Vlychada has a different character. Its pale cliffs, shaped by wind and erosion, create a landscape that is almost sculptural. It is a very photogenic beach and a great place to unwind after a morning stroll. There’s no need to do much: just walk a short distance, swim and admire the rock walls, and let the landscape work its magic.
Practical tip: if you want to go to the beach after walking, choose areas with facilities and shade. The combination of sun, wind and volcanic terrain in Santorini can be more tiring than expected.
Inland villages for breathing easier
To escape the crowds, it is worth venturing inland. Santorini has villages that aren’t just about the view of the caldera, and they allow you to experience a different side of the island.
Pyrgos is one of the best options. Perched on higher ground, it boasts sweeping views over Santorini and preserves a layout of narrow streets, stairways and whitewashed houses that invites you to explore at a leisurely pace. Megalochori has a more intimate atmosphere, with traditional houses, courtyards and bell towers, as well as a strong connection to Santorini’s wine culture. It is the perfect place to take a mid-afternoon stroll as the sun begins to set, followed by a seat on a quiet terrace.
Further south, Emporio retains a more local and labyrinthine feel. Its old centre, with its narrow passages and defensive architecture, serves as a reminder that Santorini was once home to protected villages rather than just hotels with views. It is the perfect place for those who want to explore on foot without the constant pressure to take photos or visit famous viewpoints.
Tips for walking in summer
The main rule is simple: don’t walk at midday. In Santorini, particularly in July and August, the sun can be extremely intense, and many routes offer little to no shade. The best option is to set off at dawn or very early and save the middle hours of the day for eating, resting or swimming. Make sure you always carry enough water, sunscreen, sunglasses and a cap or hat. Footwear is important too: while some routes may appear to be gentle walks between villages, there are sections of stone, gravel and dirt where sandals are not a good idea.
If you walk the route from Fira to Oia, make sure you know how you will get back before you set off. You can return by bus, taxi or private transport, but during the high season, it is worth allowing extra time for travel and possible delays. You can also just do one section, such as Fira–Firostefani–Imerovgli, if you don’t want to spend half a day walking.
A day plan on foot
The perfect way to discover Santorini on foot is to start very early in Fira and follow the caldera route towards Firostefani and Imerovgli. If it is too hot, or if you would prefer not to walk all the way to Oia, this section offers magnificent views and it is easy to turn around and head back. Afterwards, take a long break for lunch and a rest. In the afternoon, head to a volcanic beach such as Perissa, Perivolos or Vlychada to enjoy a change of scenery. A swim will help to balance out the morning’s activities and reveal another side of the island: one that is less vertical and more mineral, and closer to the ground. At the end of the day, rather than jostling for a spot at the most popular viewpoints, it is worth considering visiting Pyrgos, Megalochori or Emporio instead. Strolling through their streets, enjoying a drink and admiring the light softening over the white houses is much more enjoyable than chasing the most famous sunset.
Those travelling to Santorini in summer should set aside at least one morning for walking. Start early, take water with you, choose a realistic route, and allow the island to reveal itself to you slowly. Santorini, experienced step by step, is so much more than a postcard: it is a volcanic story unfolding between the Aegean Sea and the sun.
