The closest beach to Kassandreia (Kassandra) is Katergopetra Nudist Beach, just 4.5 km away. Within 15 km there are 16 beaches; below are the 12 closest to Kassandreia, ordered by distance. Photos, map, reviews.
4.5 km from Kassandreia

4.6 km from Kassandreia

4.9 km from Kassandreia

5.1 km from Kassandreia

5.8 km from Kassandreia

6.1 km from Kassandreia

6.2 km from Kassandreia

6.5 km from Kassandreia

6.6 km from Kassandreia

10.4 km from Kassandreia

10.5 km from Kassandreia

10.5 km from Kassandreia

Katergopetra Nudist Beach, just 4.5 km from Kassandreia. The rest are listed below, ordered by distance.
Within 15 km of Kassandreia there are 16 beaches, with 25 across Kassandra in total.
Based on user reviews: Sani (★5.0), Kallithea (★4.7), Poseidi (★4.7).
The beaches are spread out around Kassandreia. A car makes exploring much easier — local buses and taxis are limited outside peak season.
Kassandreia is on the Kassandra side of Halkidiki, in northern Greece. The nearest airport is Thessaloniki (SKG); from there a car is the most convenient way to reach the Kassandra villages.