| Southborough to Sabadell | 669.82 mi (1,077.97 km) |
| Southborough to Sabinanigo | 597.78 mi (962.04 km) |
| Southborough to Sagunto | 793.85 mi (1,277.58 km) |
| Southborough to Salamanca | 758.97 mi (1,221.44 km) |
| Southborough to Salobrena | 1,013.75 mi (1,631.47 km) |
| Southborough to Salou | 697.70 mi (1,122.83 km) |
| Southborough to Salt | 645.65 mi (1,039.07 km) |
| Southborough to Salvatierra de Mino | 751.36 mi (1,209.19 km) |
| Southborough to Sama | 610.10 mi (981.86 km) |
| Southborough to San Adrian de Besos | 678.60 mi (1,092.10 km) |
| Southborough to San Agustin de Guadalix | 747.57 mi (1,203.09 km) |
| Southborough to San Andres de la Barca | 675.94 mi (1,087.82 km) |
| Southborough to San Andres de Llevaneras | 670.66 mi (1,079.33 km) |
| Southborough to San Andres del Rabanedo | 651.50 mi (1,048.50 km) |
| Southborough to San Bartolome | 1,804.81 mi (2,904.57 km) |
