| Northolt to Solofra | 1,034.26 mi (1,664.48 km) |
| Northolt to Somma Lombardo | 578.66 mi (931.26 km) |
| Northolt to Somma Vesuviana | 1,018.58 mi (1,639.25 km) |
| Northolt to Sommacampagna | 665.44 mi (1,070.93 km) |
| Northolt to Sona | 663.27 mi (1,067.43 km) |
| Northolt to Sondrio | 594.64 mi (956.98 km) |
| Northolt to Sora | 946.46 mi (1,523.18 km) |
| Northolt to Sorbolo | 678.85 mi (1,092.50 km) |
| Northolt to Soresina | 636.91 mi (1,025.01 km) |
| Northolt to Sorisole | 607.83 mi (978.21 km) |
| Northolt to Sorrento | 1,029.80 mi (1,657.30 km) |
| Northolt to Sorso | 855.74 mi (1,377.18 km) |
| Northolt to Sortino | 1,246.07 mi (2,005.36 km) |
| Northolt to Soverato Marina | 1,206.86 mi (1,942.25 km) |
| Northolt to Sovicille | 785.76 mi (1,264.56 km) |
