| Mariehamn to Settimo Torinese | 1,148.96 mi (1,849.07 km) |
| Mariehamn to Seveso | 1,092.39 mi (1,758.03 km) |
| Mariehamn to Sezze | 1,317.97 mi (2,121.06 km) |
| Mariehamn to Siano | 1,352.08 mi (2,175.97 km) |
| Mariehamn to Siena | 1,214.19 mi (1,954.05 km) |
| Mariehamn to Signa | 1,186.04 mi (1,908.75 km) |
| Mariehamn to Silea | 1,045.99 mi (1,683.36 km) |
| Mariehamn to Silvi Paese | 1,237.17 mi (1,991.03 km) |
| Mariehamn to Sinalunga | 1,216.13 mi (1,957.17 km) |
| Mariehamn to Siniscola | 1,418.76 mi (2,283.28 km) |
| Mariehamn to Sinnai | 1,510.37 mi (2,430.71 km) |
| Mariehamn to Siracusa | 1,604.45 mi (2,582.11 km) |
| Mariehamn to Solaro | 1,095.12 mi (1,762.43 km) |
| Mariehamn to Soliera | 1,124.83 mi (1,810.24 km) |
| Mariehamn to Solofra | 1,348.88 mi (2,170.82 km) |
