| Southborough to Santarem | 930.56 mi (1,497.59 km) |
| Southborough to Santiago do Cacem | 1,007.82 mi (1,621.93 km) |
| Southborough to Santo Andre | 1,006.76 mi (1,620.23 km) |
| Southborough to Santo Tirso | 795.64 mi (1,280.46 km) |
| Southborough to Sao Bras de Alportel | 1,047.33 mi (1,685.51 km) |
| Southborough to Sao Felix da Marinha | 817.70 mi (1,315.96 km) |
| Southborough to Sao Joao da Madeira | 822.78 mi (1,324.14 km) |
| Southborough to Sao Joao de Ver | 820.82 mi (1,320.97 km) |
| Southborough to Sao Mamede de Infesta | 807.04 mi (1,298.80 km) |
| Southborough to Sao Pedro do Sul | 821.88 mi (1,322.70 km) |
| Southborough to Satao | 815.35 mi (1,312.18 km) |
| Southborough to Seia | 834.18 mi (1,342.48 km) |
| Southborough to Senhora da Hora | 809.15 mi (1,302.21 km) |
| Southborough to Serpa | 990.41 mi (1,593.91 km) |
| Southborough to Serta | 882.00 mi (1,419.44 km) |
