| Opelika to Cernavoda | 5,670.61 mi (9,125.96 km) |
| Opelika to Chitila | 5,583.66 mi (8,986.03 km) |
| Opelika to Cisnadie | 5,462.33 mi (8,790.77 km) |
| Opelika to Cluj-Napoca | 5,397.72 mi (8,686.80 km) |
| Opelika to Codlea | 5,513.14 mi (8,872.54 km) |
| Opelika to Comanesti | 5,520.97 mi (8,885.13 km) |
| Opelika to Comarnic | 5,539.08 mi (8,914.29 km) |
| Opelika to Constanta | 5,701.13 mi (9,175.09 km) |
| Opelika to Corabia | 5,555.66 mi (8,940.97 km) |
| Opelika to Costesti | 5,533.67 mi (8,905.58 km) |
| Opelika to Covasna | 5,535.27 mi (8,908.15 km) |
| Opelika to Craiova | 5,505.28 mi (8,859.89 km) |
| Opelika to Cristuru Secuiesc | 5,472.84 mi (8,807.68 km) |
| Opelika to Cugir | 5,426.28 mi (8,732.75 km) |
| Opelika to Cumpana | 5,700.50 mi (9,174.07 km) |
