| Llantwit Major to Montalegre | 692.78 mi (1,114.93 km) |
| Llantwit Major to Montemor-o-Novo | 910.78 mi (1,465.76 km) |
| Llantwit Major to Montemor-o-Velho | 815.58 mi (1,312.55 km) |
| Llantwit Major to Montijo | 917.45 mi (1,476.49 km) |
| Llantwit Major to Mortagua | 791.47 mi (1,273.74 km) |
| Llantwit Major to Moura | 937.20 mi (1,508.28 km) |
| Llantwit Major to Murtosa | 777.28 mi (1,250.91 km) |
| Llantwit Major to Nazare | 858.86 mi (1,382.20 km) |
| Llantwit Major to Nelas | 780.82 mi (1,256.60 km) |
| Llantwit Major to Obidos | 876.26 mi (1,410.21 km) |
| Llantwit Major to Odemira | 987.70 mi (1,589.54 km) |
| Llantwit Major to Odivelas | 914.30 mi (1,471.42 km) |
| Llantwit Major to Oeiras | 923.42 mi (1,486.10 km) |
| Llantwit Major to Olhao | 1,016.36 mi (1,635.67 km) |
| Llantwit Major to Oliveira de Azemeis | 767.86 mi (1,235.74 km) |
