| Carlow to Montemor-o-Novo | 981.70 mi (1,579.89 km) |
| Carlow to Montemor-o-Velho | 878.88 mi (1,414.42 km) |
| Carlow to Montijo | 981.98 mi (1,580.35 km) |
| Carlow to Mortagua | 858.76 mi (1,382.03 km) |
| Carlow to Moura | 1,015.79 mi (1,634.75 km) |
| Carlow to Murtosa | 839.65 mi (1,351.28 km) |
| Carlow to Nazare | 919.72 mi (1,480.14 km) |
| Carlow to Nelas | 851.90 mi (1,371.00 km) |
| Carlow to Obidos | 936.83 mi (1,507.68 km) |
| Carlow to Odemira | 1,056.66 mi (1,700.53 km) |
| Carlow to Odivelas | 975.99 mi (1,570.70 km) |
| Carlow to Oeiras | 984.08 mi (1,583.72 km) |
| Carlow to Olhao | 1,092.87 mi (1,758.81 km) |
| Carlow to Oliveira de Azemeis | 831.62 mi (1,338.37 km) |
| Carlow to Oliveira de Frades | 839.05 mi (1,350.32 km) |
