| Olen to Cogolin | 551.29 mi (887.22 km) |
| Olen to Colmar | 239.81 mi (385.93 km) |
| Olen to Colombes | 192.21 mi (309.33 km) |
| Olen to Colomiers | 545.85 mi (878.47 km) |
| Olen to Combs-la-Ville | 199.34 mi (320.80 km) |
| Olen to Comines | 84.56 mi (136.08 km) |
| Olen to Compiegne | 149.59 mi (240.74 km) |
| Olen to Concarneau | 453.38 mi (729.64 km) |
| Olen to Conde-sur-l'Escaut | 73.27 mi (117.92 km) |
| Olen to Conflans-Sainte-Honorine | 192.25 mi (309.40 km) |
| Olen to Corbas | 378.77 mi (609.57 km) |
| Olen to Corbeil-Essonnes | 204.47 mi (329.07 km) |
| Olen to Cormeilles-en-Parisis | 190.78 mi (307.03 km) |
| Olen to Cosne sur Loire | 272.54 mi (438.61 km) |
| Olen to Coudekerque-Branche | 107.03 mi (172.25 km) |
