| Harrow to Solofra | 1,035.11 mi (1,665.85 km) |
| Harrow to Somma Lombardo | 579.56 mi (932.72 km) |
| Harrow to Somma Vesuviana | 1,019.48 mi (1,640.69 km) |
| Harrow to Sommacampagna | 666.09 mi (1,071.97 km) |
| Harrow to Sona | 663.92 mi (1,068.47 km) |
| Harrow to Sondrio | 595.26 mi (957.98 km) |
| Harrow to Sora | 947.34 mi (1,524.60 km) |
| Harrow to Sorbolo | 679.66 mi (1,093.81 km) |
| Harrow to Soresina | 637.73 mi (1,026.32 km) |
| Harrow to Sorisole | 608.58 mi (979.42 km) |
| Harrow to Sorrento | 1,030.72 mi (1,658.79 km) |
| Harrow to Sorso | 857.32 mi (1,379.72 km) |
| Harrow to Sortino | 1,247.24 mi (2,007.25 km) |
| Harrow to Soverato Marina | 1,207.76 mi (1,943.70 km) |
| Harrow to Sovicille | 786.72 mi (1,266.10 km) |
