| Mariehamn to Sangeorz-Bai | 900.12 mi (1,448.61 km) |
| Mariehamn to Sannicolau Mare | 970.22 mi (1,561.41 km) |
| Mariehamn to Santana | 952.17 mi (1,532.37 km) |
| Mariehamn to Satu Mare | 858.78 mi (1,382.07 km) |
| Mariehamn to Scobinti | 922.79 mi (1,485.09 km) |
| Mariehamn to Scornicesti | 1,089.93 mi (1,754.07 km) |
| Mariehamn to Sebes | 988.22 mi (1,590.39 km) |
| Mariehamn to Seini | 864.00 mi (1,390.48 km) |
| Mariehamn to Sfantu-Gheorghe | 1,012.37 mi (1,629.26 km) |
| Mariehamn to Sibiu | 1,003.51 mi (1,614.99 km) |
| Mariehamn to Sighetu Marmatiei | 855.80 mi (1,377.28 km) |
| Mariehamn to Sighisoara | 979.46 mi (1,576.29 km) |
| Mariehamn to Simeria | 992.60 mi (1,597.43 km) |
| Mariehamn to Sinaia | 1,044.97 mi (1,681.72 km) |
| Mariehamn to Slatina | 1,098.20 mi (1,767.38 km) |
