| Hudiksvall to Solofra | 1,447.16 mi (2,328.98 km) |
| Hudiksvall to Somma Lombardo | 1,158.88 mi (1,865.03 km) |
| Hudiksvall to Somma Vesuviana | 1,445.69 mi (2,326.61 km) |
| Hudiksvall to Sommacampagna | 1,156.16 mi (1,860.66 km) |
| Hudiksvall to Sona | 1,154.05 mi (1,857.26 km) |
| Hudiksvall to Sondrio | 1,113.34 mi (1,791.75 km) |
| Hudiksvall to Sora | 1,390.62 mi (2,237.98 km) |
| Hudiksvall to Sorbolo | 1,197.34 mi (1,926.94 km) |
| Hudiksvall to Soresina | 1,173.13 mi (1,887.97 km) |
| Hudiksvall to Sorisole | 1,144.71 mi (1,842.23 km) |
| Hudiksvall to Sorrento | 1,462.77 mi (2,354.10 km) |
| Hudiksvall to Sorso | 1,489.88 mi (2,397.73 km) |
| Hudiksvall to Sortino | 1,699.76 mi (2,735.50 km) |
| Hudiksvall to Soverato Marina | 1,592.78 mi (2,563.34 km) |
| Hudiksvall to Sovicille | 1,297.29 mi (2,087.79 km) |
