| Durham to Montalegre | 938.59 mi (1,510.51 km) |
| Durham to Montemor-o-Novo | 1,156.53 mi (1,861.26 km) |
| Durham to Montemor-o-Velho | 1,061.30 mi (1,708.00 km) |
| Durham to Montijo | 1,163.25 mi (1,872.07 km) |
| Durham to Mortagua | 1,037.28 mi (1,669.34 km) |
| Durham to Moura | 1,182.42 mi (1,902.91 km) |
| Durham to Murtosa | 1,022.93 mi (1,646.24 km) |
| Durham to Nazare | 1,104.50 mi (1,777.53 km) |
| Durham to Nelas | 1,026.62 mi (1,652.19 km) |
| Durham to Obidos | 1,121.91 mi (1,805.54 km) |
| Durham to Odemira | 1,233.47 mi (1,985.08 km) |
| Durham to Odivelas | 1,160.02 mi (1,866.87 km) |
| Durham to Oeiras | 1,169.11 mi (1,881.50 km) |
| Durham to Olhao | 1,261.66 mi (2,030.45 km) |
| Durham to Oliveira de Azemeis | 1,013.56 mi (1,631.17 km) |
