| Williamstown to Benavente | 3,452.27 mi (5,555.89 km) |
| Williamstown to Bombarral | 3,426.61 mi (5,514.59 km) |
| Williamstown to Bougado | 3,401.97 mi (5,474.95 km) |
| Williamstown to Braga | 3,403.32 mi (5,477.12 km) |
| Williamstown to Braganca | 3,476.56 mi (5,594.98 km) |
| Williamstown to Cabeceiras de Basto | 3,423.17 mi (5,509.06 km) |
| Williamstown to Cacem | 3,432.46 mi (5,524.02 km) |
| Williamstown to Cadaval | 3,430.27 mi (5,520.48 km) |
| Williamstown to Caldas da Rainha | 3,423.85 mi (5,510.16 km) |
| Williamstown to Calheta | 3,203.33 mi (5,155.26 km) |
| Williamstown to Camara de Lobos | 3,214.07 mi (5,172.54 km) |
| Williamstown to Canico | 3,222.38 mi (5,185.93 km) |
| Williamstown to Cantanhede | 3,425.66 mi (5,513.07 km) |
| Williamstown to Carregal do Sal | 3,452.32 mi (5,555.98 km) |
| Williamstown to Cartaxo | 3,448.13 mi (5,549.23 km) |
