| Alpena to Benavente | 3,716.81 mi (5,981.63 km) |
| Alpena to Bombarral | 3,689.58 mi (5,937.81 km) |
| Alpena to Bougado | 3,641.49 mi (5,860.41 km) |
| Alpena to Braga | 3,640.07 mi (5,858.13 km) |
| Alpena to Braganca | 3,704.26 mi (5,961.43 km) |
| Alpena to Cabeceiras de Basto | 3,658.55 mi (5,887.87 km) |
| Alpena to Cacem | 3,701.01 mi (5,956.20 km) |
| Alpena to Cadaval | 3,693.37 mi (5,943.90 km) |
| Alpena to Caldas da Rainha | 3,685.36 mi (5,931.01 km) |
| Alpena to Calheta | 3,561.88 mi (5,732.29 km) |
| Alpena to Camara de Lobos | 3,572.07 mi (5,748.70 km) |
| Alpena to Canico | 3,580.31 mi (5,761.96 km) |
| Alpena to Cantanhede | 3,675.52 mi (5,915.18 km) |
| Alpena to Carregal do Sal | 3,698.95 mi (5,952.88 km) |
| Alpena to Cartaxo | 3,710.78 mi (5,971.93 km) |
