| Olecko to Coudekerque-Branche | 867.16 mi (1,395.55 km) |
| Olecko to Coueron | 1,154.09 mi (1,857.32 km) |
| Olecko to Coulommiers | 907.12 mi (1,459.86 km) |
| Olecko to Courbevoic | 936.84 mi (1,507.71 km) |
| Olecko to Courcouronnes | 939.51 mi (1,512.00 km) |
| Olecko to Cournon-d'Auvergne | 1,027.48 mi (1,653.56 km) |
| Olecko to Courrieres | 860.08 mi (1,384.16 km) |
| Olecko to Coutras | 1,181.93 mi (1,902.13 km) |
| Olecko to Couzeix | 1,094.10 mi (1,760.78 km) |
| Olecko to Cran-Gevrier | 916.33 mi (1,474.70 km) |
| Olecko to Craponne | 972.35 mi (1,564.84 km) |
| Olecko to Creil | 915.57 mi (1,473.46 km) |
| Olecko to Crepy-en-Valois | 900.40 mi (1,449.05 km) |
| Olecko to Crest | 1,010.82 mi (1,626.75 km) |
| Olecko to Creteil | 932.30 mi (1,500.40 km) |
