| Hudiksvall to Sestu | 1,586.85 mi (2,553.78 km) |
| Hudiksvall to Settimo Torinese | 1,206.93 mi (1,942.37 km) |
| Hudiksvall to Seveso | 1,156.61 mi (1,861.38 km) |
| Hudiksvall to Sezze | 1,408.09 mi (2,266.10 km) |
| Hudiksvall to Siano | 1,449.72 mi (2,333.10 km) |
| Hudiksvall to Siena | 1,294.17 mi (2,082.76 km) |
| Hudiksvall to Signa | 1,264.19 mi (2,034.52 km) |
| Hudiksvall to Silea | 1,127.54 mi (1,814.59 km) |
| Hudiksvall to Silvi Paese | 1,331.19 mi (2,142.34 km) |
| Hudiksvall to Sinalunga | 1,298.22 mi (2,089.28 km) |
| Hudiksvall to Siniscola | 1,494.64 mi (2,405.38 km) |
| Hudiksvall to Sinnai | 1,585.63 mi (2,551.82 km) |
| Hudiksvall to Siracusa | 1,705.95 mi (2,745.46 km) |
| Hudiksvall to Solaro | 1,159.11 mi (1,865.41 km) |
| Hudiksvall to Soliera | 1,200.55 mi (1,932.10 km) |
