The closest beach to Xyropotamos (Athos) is Develiki Beach, just 1.5 km away. Within 15 km there are 15 beaches; below are the 12 closest to Xyropotamos, ordered by distance. Photos, map, reviews.
1.5 km from Xyropotamos

4.2 km from Xyropotamos

4.6 km from Xyropotamos

4.6 km from Xyropotamos

4.8 km from Xyropotamos

5.3 km from Xyropotamos

5.8 km from Xyropotamos

6.9 km from Xyropotamos

7.8 km from Xyropotamos

10.1 km from Xyropotamos

10.1 km from Xyropotamos

11.0 km from Xyropotamos

Develiki Beach, just 1.5 km from Xyropotamos. The rest are listed below, ordered by distance.
Within 15 km of Xyropotamos there are 15 beaches.
Based on user reviews: Trypiti (★4.5), Komitsa (★4.2), Develiki Beach (★3.8).
The beaches are spread out around Xyropotamos. A car makes exploring much easier — local buses and taxis are limited outside peak season.
Xyropotamos is on the Athos side of Halkidiki, in northern Greece. The nearest airport is Thessaloniki (SKG); from there a car is the most convenient way to reach the Athos villages.