| Cave Spring to Montalegre | 3,746.39 mi (6,029.24 km) |
| Cave Spring to Montemor-o-Novo | 3,806.99 mi (6,126.76 km) |
| Cave Spring to Montemor-o-Velho | 3,744.41 mi (6,026.05 km) |
| Cave Spring to Montijo | 3,772.07 mi (6,070.56 km) |
| Cave Spring to Mortagua | 3,759.70 mi (6,050.65 km) |
| Cave Spring to Moura | 3,859.18 mi (6,210.74 km) |
| Cave Spring to Murtosa | 3,732.60 mi (6,007.04 km) |
| Cave Spring to Nazare | 3,739.97 mi (6,018.89 km) |
| Cave Spring to Nelas | 3,776.30 mi (6,077.37 km) |
| Cave Spring to Obidos | 3,741.67 mi (6,021.63 km) |
| Cave Spring to Odemira | 3,814.94 mi (6,139.55 km) |
| Cave Spring to Odivelas | 3,755.32 mi (6,043.60 km) |
| Cave Spring to Oeiras | 3,751.28 mi (6,037.11 km) |
| Cave Spring to Olhao | 3,870.25 mi (6,228.57 km) |
| Cave Spring to Oliveira de Azemeis | 3,737.66 mi (6,015.18 km) |
