| Northolt to Sabadell | 700.67 mi (1,127.62 km) |
| Northolt to Sabinanigo | 623.78 mi (1,003.88 km) |
| Northolt to Sagunto | 820.17 mi (1,319.94 km) |
| Northolt to Salamanca | 773.12 mi (1,244.21 km) |
| Northolt to Salobrena | 1,034.68 mi (1,665.16 km) |
| Northolt to Salou | 726.71 mi (1,169.52 km) |
| Northolt to Salt | 677.78 mi (1,090.78 km) |
| Northolt to Salvatierra de Mino | 757.43 mi (1,218.96 km) |
| Northolt to Sama | 621.16 mi (999.67 km) |
| Northolt to San Adrian de Besos | 709.60 mi (1,141.99 km) |
| Northolt to San Agustin de Guadalix | 766.66 mi (1,233.82 km) |
| Northolt to San Andres de la Barca | 706.54 mi (1,137.06 km) |
| Northolt to San Andres de Llevaneras | 702.15 mi (1,130.00 km) |
| Northolt to San Andres del Rabanedo | 663.83 mi (1,068.33 km) |
| Northolt to San Bartolome | 1,812.69 mi (2,917.25 km) |
