| Alpena to Campo de Criptana | 3,954.88 mi (6,364.77 km) |
| Alpena to Campos del Puerto | 4,221.17 mi (6,793.32 km) |
| Alpena to Canals | 4,083.63 mi (6,571.96 km) |
| Alpena to Candelaria | 3,776.80 mi (6,078.17 km) |
| Alpena to Canet de Mar | 4,115.26 mi (6,622.87 km) |
| Alpena to Cangas | 3,598.93 mi (5,791.92 km) |
| Alpena to Cangas de Narcea | 3,665.31 mi (5,898.74 km) |
| Alpena to Canovellas | 4,101.47 mi (6,600.68 km) |
| Alpena to Canteras | 4,117.49 mi (6,626.47 km) |
| Alpena to Cantillana | 3,903.87 mi (6,282.67 km) |
| Alpena to Capdepera | 4,227.87 mi (6,804.11 km) |
| Alpena to Carballo | 3,570.34 mi (5,745.91 km) |
| Alpena to Carcagente | 4,083.17 mi (6,571.23 km) |
| Alpena to Cardedeu | 4,103.86 mi (6,604.52 km) |
| Alpena to Carlet | 4,075.86 mi (6,559.46 km) |
