| Circleville to Montalegre | 3,806.11 mi (6,125.35 km) |
| Circleville to Montemor-o-Novo | 3,880.80 mi (6,245.55 km) |
| Circleville to Montemor-o-Velho | 3,812.51 mi (6,135.65 km) |
| Circleville to Montijo | 3,846.76 mi (6,190.76 km) |
| Circleville to Mortagua | 3,826.02 mi (6,157.39 km) |
| Circleville to Moura | 3,933.97 mi (6,331.11 km) |
| Circleville to Murtosa | 3,798.20 mi (6,112.61 km) |
| Circleville to Nazare | 3,811.03 mi (6,133.26 km) |
| Circleville to Nelas | 3,841.73 mi (6,182.66 km) |
| Circleville to Obidos | 3,813.89 mi (6,137.87 km) |
| Circleville to Odemira | 3,893.78 mi (6,266.43 km) |
| Circleville to Odivelas | 3,829.97 mi (6,163.74 km) |
| Circleville to Oeiras | 3,826.59 mi (6,158.30 km) |
| Circleville to Olhao | 3,950.14 mi (6,357.13 km) |
| Circleville to Oliveira de Azemeis | 3,802.57 mi (6,119.65 km) |
