Hiking in Kea — Ancient Paths Through Oak Forest

Kea has one of the most extensive and well-maintained trail networks of any Cycladic island — over 80 km of marked paths that pre-date the road system by centuries. The routes connect villages, ancient sites, monasteries and beaches through an interior that is greener and more varied than most visitors expect.

The Trail Network

The island’s paths were originally built as commercial and agricultural routes between its four ancient cities and the farming communities of the interior. Many are paved in the traditional Aegean style with flat slate or marble setts, and the surfaces are remarkably intact. Signage has been improved in recent years and most major routes are now marked with waymarkers and stone cairns.

The landscape through which the trails pass is varied: oak woodland (one of the most extensive oak landscapes in the Cyclades), terraced vineyards and olive groves, river valleys in spring, and dramatic coastal cliffs. Wildlife is present throughout — birds of prey are frequently seen, and the island’s reptile fauna includes several species found only here.

Key Routes

The most celebrated route on the island is the trail from Ioulida to Karthea — up to 12–13 km depending on the path chosen. The route passes through four hamlets and ends at the spectacular sea-edge ruins of Karthea with a swimmable beach below. Allow 4–6 hours and start before 7am in summer.

The coastal path from Otzias to Vourkari (approximately 4 km, one hour) is gentler and offers excellent sea views, passing the Agia Irini prehistoric site. The walk from Ioulida to the Lion of Kea and back (3 km, 45 minutes) is the most accessible option for visitors with limited time. A trail from Ioulida to the monastery of Agia Marina passes through the Hellenistic tower of the same name — around 5 km each way.

Guided Hiking

Kea Terra Active is the main guided hiking operator on the island, offering half-day and full-day walks with experienced local guides who provide historical and ecological interpretation. Guided tours are particularly recommended for the Karthea route, which they also support with return transport — solving the logistical challenge of this point-to-point hike.

Practical Tips

• Download offline maps before setting out — mobile coverage is patchy in the interior
• Start long hikes before 7am in summer to avoid peak heat
• The Karthea hike requires good fitness and sturdy footwear — not a casual walk
• Spring (April–May) is ideal: cool air, wildflowers, clear views
• Carry a minimum of 2 litres of water per person on any route longer than 2 hours
• Kea Terra Active can be found through most accommodation providers on the island