| Williamstown to Santarem | 3,450.65 mi (5,553.29 km) |
| Williamstown to Santiago do Cacem | 3,483.44 mi (5,606.06 km) |
| Williamstown to Santo Andre | 3,480.02 mi (5,600.55 km) |
| Williamstown to Santo Tirso | 3,406.53 mi (5,482.27 km) |
| Williamstown to Sao Bras de Alportel | 3,548.89 mi (5,711.38 km) |
| Williamstown to Sao Felix da Marinha | 3,406.55 mi (5,482.31 km) |
| Williamstown to Sao Joao da Madeira | 3,416.54 mi (5,498.39 km) |
| Williamstown to Sao Joao de Ver | 3,412.08 mi (5,491.21 km) |
| Williamstown to Sao Mamede de Infesta | 3,403.45 mi (5,477.33 km) |
| Williamstown to Sao Pedro do Sul | 3,440.82 mi (5,537.46 km) |
| Williamstown to Satao | 3,457.42 mi (5,564.18 km) |
| Williamstown to Seia | 3,467.09 mi (5,579.74 km) |
| Williamstown to Senhora da Hora | 3,401.34 mi (5,473.92 km) |
| Williamstown to Serpa | 3,540.20 mi (5,697.40 km) |
| Williamstown to Serta | 3,464.23 mi (5,575.13 km) |
