| Willoughby to Montalegre | 3,669.95 mi (5,906.22 km) |
| Willoughby to Montemor-o-Novo | 3,750.53 mi (6,035.89 km) |
| Willoughby to Montemor-o-Velho | 3,679.83 mi (5,922.11 km) |
| Willoughby to Montijo | 3,716.92 mi (5,981.81 km) |
| Willoughby to Mortagua | 3,692.56 mi (5,942.60 km) |
| Willoughby to Moura | 3,804.05 mi (6,122.03 km) |
| Willoughby to Murtosa | 3,664.46 mi (5,897.39 km) |
| Willoughby to Nazare | 3,679.63 mi (5,921.80 km) |
| Willoughby to Nelas | 3,707.86 mi (5,967.23 km) |
| Willoughby to Obidos | 3,683.00 mi (5,927.22 km) |
| Willoughby to Odemira | 3,765.78 mi (6,060.44 km) |
| Willoughby to Odivelas | 3,700.14 mi (5,954.80 km) |
| Willoughby to Oeiras | 3,697.06 mi (5,949.84 km) |
| Willoughby to Olhao | 3,822.55 mi (6,151.79 km) |
| Willoughby to Oliveira de Azemeis | 3,668.55 mi (5,903.96 km) |
