The closest activity to Porto Koufo (Sithonia) is Ancient Toroni & Lekythos, just 3.9 km away. Ordered by distance from Porto Koufo. Info, prices, booking.
3.9 km from Porto Koufo
8.1 km from Porto Koufo

12.6 km from Porto Koufo

13.5 km from Porto Koufo

15.7 km from Porto Koufo

28.4 km from Porto Koufo

30.7 km from Porto Koufo

31.2 km from Porto Koufo

35.7 km from Porto Koufo

38.3 km from Porto Koufo

Ancient Toroni & Lekythos, just 3.9 km from Porto Koufo. The rest are listed below, ordered by distance.
Within 15 km of Porto Koufo there are 4 activities, with 10 across Sithonia in total.
Based on user reviews: Cycling Route of Sithonia (★5.0), Church of Agios Antonios (★4.9), Boat Trip to Diaporos (★4.9).
The activities are spread out around Porto Koufo. A car makes exploring much easier — local buses and taxis are limited outside peak season.
Porto Koufo is on the Sithonia side of Halkidiki, in northern Greece. The nearest airport is Thessaloniki (SKG); from there a car is the most convenient way to reach the Sithonia villages.