| Risca to Montalegre | 711.42 mi (1,144.92 km) |
| Risca to Montemor-o-Novo | 928.93 mi (1,494.97 km) |
| Risca to Montemor-o-Velho | 834.39 mi (1,342.83 km) |
| Risca to Montijo | 936.05 mi (1,506.43 km) |
| Risca to Mortagua | 810.04 mi (1,303.63 km) |
| Risca to Moura | 954.72 mi (1,536.48 km) |
| Risca to Murtosa | 796.21 mi (1,281.38 km) |
| Risca to Nazare | 877.78 mi (1,412.64 km) |
| Risca to Nelas | 799.14 mi (1,286.09 km) |
| Risca to Obidos | 895.18 mi (1,440.65 km) |
| Risca to Odemira | 1,005.91 mi (1,618.85 km) |
| Risca to Odivelas | 933.09 mi (1,501.67 km) |
| Risca to Oeiras | 942.28 mi (1,516.45 km) |
| Risca to Olhao | 1,033.96 mi (1,663.99 km) |
| Risca to Oliveira de Azemeis | 786.71 mi (1,266.08 km) |
