| Upminster to Sabadell | 696.99 mi (1,121.69 km) |
| Upminster to Sabinanigo | 625.07 mi (1,005.95 km) |
| Upminster to Sagunto | 821.17 mi (1,321.54 km) |
| Upminster to Salamanca | 783.77 mi (1,261.35 km) |
| Upminster to Salobrena | 1,040.37 mi (1,674.31 km) |
| Upminster to Salou | 725.03 mi (1,166.83 km) |
| Upminster to Salt | 672.58 mi (1,082.41 km) |
| Upminster to Salvatierra de Mino | 773.07 mi (1,244.14 km) |
| Upminster to Sama | 633.78 mi (1,019.97 km) |
| Upminster to San Adrian de Besos | 705.74 mi (1,135.78 km) |
| Upminster to San Agustin de Guadalix | 773.76 mi (1,245.24 km) |
| Upminster to San Andres de la Barca | 703.14 mi (1,131.59 km) |
| Upminster to San Andres de Llevaneras | 697.73 mi (1,122.88 km) |
| Upminster to San Andres del Rabanedo | 675.66 mi (1,087.36 km) |
| Upminster to San Bartolome | 1,827.43 mi (2,940.97 km) |
