| Watertown Town to Montalegre | 3,170.72 mi (5,102.78 km) |
| Watertown Town to Montemor-o-Novo | 3,240.86 mi (5,215.66 km) |
| Watertown Town to Montemor-o-Velho | 3,174.05 mi (5,108.14 km) |
| Watertown Town to Montijo | 3,206.62 mi (5,160.55 km) |
| Watertown Town to Mortagua | 3,188.13 mi (5,130.81 km) |
| Watertown Town to Moura | 3,293.83 mi (5,300.91 km) |
| Watertown Town to Murtosa | 3,160.54 mi (5,086.40 km) |
| Watertown Town to Nazare | 3,171.73 mi (5,104.40 km) |
| Watertown Town to Nelas | 3,204.15 mi (5,156.58 km) |
| Watertown Town to Obidos | 3,174.29 mi (5,108.53 km) |
| Watertown Town to Odemira | 3,252.91 mi (5,235.06 km) |
| Watertown Town to Odivelas | 3,189.83 mi (5,133.53 km) |
| Watertown Town to Oeiras | 3,186.31 mi (5,127.87 km) |
| Watertown Town to Olhao | 3,309.14 mi (5,325.55 km) |
| Watertown Town to Oliveira de Azemeis | 3,165.15 mi (5,093.82 km) |
