| Opelika to Chivasso | 4,806.70 mi (7,735.63 km) |
| Opelika to Ciampino | 5,125.35 mi (8,248.46 km) |
| Opelika to Cicciano | 5,240.92 mi (8,434.45 km) |
| Opelika to Cingoli | 5,098.55 mi (8,205.32 km) |
| Opelika to Cinisello Balsamo | 4,853.31 mi (7,810.65 km) |
| Opelika to Cinisi | 5,275.56 mi (8,490.20 km) |
| Opelika to Cirie | 4,792.81 mi (7,713.28 km) |
| Opelika to Ciro Marina | 5,415.59 mi (8,715.56 km) |
| Opelika to Cislago | 4,839.41 mi (7,788.27 km) |
| Opelika to Cisterna di Latina | 5,142.78 mi (8,276.51 km) |
| Opelika to Cisternino | 5,377.94 mi (8,654.96 km) |
| Opelika to Citta di Castello | 5,052.89 mi (8,131.84 km) |
| Opelika to Citta Sant'Angelo | 5,164.54 mi (8,311.53 km) |
| Opelika to Cittadella | 4,959.98 mi (7,982.32 km) |
| Opelika to Cittanova | 5,406.45 mi (8,700.84 km) |
