| Piraeus to Sangeorz-Bai | 653.44 mi (1,051.61 km) |
| Piraeus to Sannicolau Mare | 582.19 mi (936.94 km) |
| Piraeus to Santana | 591.12 mi (951.32 km) |
| Piraeus to Satu Mare | 681.43 mi (1,096.66 km) |
| Piraeus to Scobinti | 673.13 mi (1,083.29 km) |
| Piraeus to Scornicesti | 460.27 mi (740.73 km) |
| Piraeus to Sebes | 553.94 mi (891.47 km) |
| Piraeus to Seini | 677.69 mi (1,090.64 km) |
| Piraeus to Sfantu-Gheorghe | 558.16 mi (898.27 km) |
| Piraeus to Sibiu | 542.99 mi (873.85 km) |
| Piraeus to Sighetu Marmatiei | 690.05 mi (1,110.53 km) |
| Piraeus to Sighisoara | 574.66 mi (924.82 km) |
| Piraeus to Simeria | 547.30 mi (880.79 km) |
| Piraeus to Sinaia | 521.09 mi (838.61 km) |
| Piraeus to Slatina | 449.73 mi (723.77 km) |
