| Heerenveen to Montemor-o-Novo | 1,195.61 mi (1,924.14 km) |
| Heerenveen to Montemor-o-Velho | 1,119.04 mi (1,800.92 km) |
| Heerenveen to Montijo | 1,212.18 mi (1,950.81 km) |
| Heerenveen to Mortagua | 1,090.69 mi (1,755.29 km) |
| Heerenveen to Moura | 1,207.00 mi (1,942.48 km) |
| Heerenveen to Murtosa | 1,084.96 mi (1,746.07 km) |
| Heerenveen to Nazare | 1,162.96 mi (1,871.61 km) |
| Heerenveen to Nelas | 1,074.98 mi (1,730.02 km) |
| Heerenveen to Obidos | 1,179.67 mi (1,898.50 km) |
| Heerenveen to Odemira | 1,270.99 mi (2,045.47 km) |
| Heerenveen to Odivelas | 1,213.63 mi (1,953.14 km) |
| Heerenveen to Oeiras | 1,223.78 mi (1,969.49 km) |
| Heerenveen to Olhao | 1,284.83 mi (2,067.74 km) |
| Heerenveen to Oliveira de Azemeis | 1,074.21 mi (1,728.78 km) |
| Heerenveen to Oliveira de Frades | 1,072.85 mi (1,726.58 km) |
