| Olecko to Chitila | 676.36 mi (1,088.50 km) |
| Olecko to Cisnadie | 579.53 mi (932.66 km) |
| Olecko to Cluj-Napoca | 504.32 mi (811.62 km) |
| Olecko to Codlea | 590.59 mi (950.46 km) |
| Olecko to Comanesti | 553.38 mi (890.59 km) |
| Olecko to Comarnic | 622.63 mi (1,002.03 km) |
| Olecko to Constanta | 735.34 mi (1,183.42 km) |
| Olecko to Corabia | 714.61 mi (1,150.06 km) |
| Olecko to Costesti | 655.67 mi (1,055.20 km) |
| Olecko to Covasna | 588.52 mi (947.14 km) |
| Olecko to Craiova | 672.81 mi (1,082.78 km) |
| Olecko to Cristuru Secuiesc | 546.44 mi (879.41 km) |
| Olecko to Cugir | 567.14 mi (912.73 km) |
| Olecko to Cumpana | 737.55 mi (1,186.97 km) |
| Olecko to Curtea de Arges | 622.15 mi (1,001.25 km) |
