| Olecko to Cortona | 882.61 mi (1,420.43 km) |
| Olecko to Cosenza | 1,059.21 mi (1,704.63 km) |
| Olecko to Cossato | 863.54 mi (1,389.73 km) |
| Olecko to Costa Volpino | 788.65 mi (1,269.21 km) |
| Olecko to Creazzo | 764.02 mi (1,229.57 km) |
| Olecko to Crema | 826.19 mi (1,329.63 km) |
| Olecko to Cremona | 828.30 mi (1,333.02 km) |
| Olecko to Crevalcore | 819.56 mi (1,318.95 km) |
| Olecko to Crispiano | 959.71 mi (1,544.50 km) |
| Olecko to Crosia | 1,034.83 mi (1,665.39 km) |
| Olecko to Crotone | 1,063.36 mi (1,711.32 km) |
| Olecko to Cuneo | 945.02 mi (1,520.86 km) |
| Olecko to Cuorgne | 889.45 mi (1,431.43 km) |
| Olecko to Cusano Milanino | 831.92 mi (1,338.85 km) |
| Olecko to Cutro | 1,068.29 mi (1,719.24 km) |
