| Opelika to Corato | 5,317.00 mi (8,556.88 km) |
| Opelika to Corbetta | 4,842.95 mi (7,793.97 km) |
| Opelika to Corciano | 5,065.71 mi (8,152.47 km) |
| Opelika to Cordenons | 4,987.67 mi (8,026.87 km) |
| Opelika to Cori | 5,144.69 mi (8,279.58 km) |
| Opelika to Coriano | 5,051.26 mi (8,129.21 km) |
| Opelika to Corigliano Calabro | 5,379.57 mi (8,657.58 km) |
| Opelika to Corleone | 5,297.38 mi (8,525.32 km) |
| Opelika to Cormano | 4,851.15 mi (7,807.18 km) |
| Opelika to Cornaredo | 4,846.95 mi (7,800.42 km) |
| Opelika to Cornate d'Adda | 4,860.95 mi (7,822.94 km) |
| Opelika to Cornedo Vicentino | 4,942.64 mi (7,954.41 km) |
| Opelika to Correggio | 4,945.84 mi (7,959.56 km) |
| Opelika to Corridonia | 5,115.64 mi (8,232.83 km) |
| Opelika to Corsico | 4,852.64 mi (7,809.57 km) |
