| Conwy to Montalegre | 812.54 mi (1,307.66 km) |
| Conwy to Montemor-o-Novo | 1,032.06 mi (1,660.94 km) |
| Conwy to Montemor-o-Velho | 934.20 mi (1,503.44 km) |
| Conwy to Montijo | 1,036.83 mi (1,668.62 km) |
| Conwy to Mortagua | 911.23 mi (1,466.48 km) |
| Conwy to Moura | 1,060.66 mi (1,706.97 km) |
| Conwy to Murtosa | 895.43 mi (1,441.05 km) |
| Conwy to Nazare | 976.86 mi (1,572.11 km) |
| Conwy to Nelas | 901.68 mi (1,451.11 km) |
| Conwy to Obidos | 994.24 mi (1,600.07 km) |
| Conwy to Odemira | 1,108.63 mi (1,784.16 km) |
| Conwy to Odivelas | 1,032.77 mi (1,662.08 km) |
| Conwy to Oeiras | 1,041.60 mi (1,676.29 km) |
| Conwy to Olhao | 1,139.46 mi (1,833.79 km) |
| Conwy to Oliveira de Azemeis | 886.41 mi (1,426.54 km) |
