| Os to Cognac | 1,031.69 mi (1,660.35 km) |
| Os to Cogolin | 1,173.65 mi (1,888.80 km) |
| Os to Colmar | 842.50 mi (1,355.88 km) |
| Os to Colombes | 791.34 mi (1,273.54 km) |
| Os to Colomiers | 1,160.76 mi (1,868.06 km) |
| Os to Combs-la-Ville | 806.85 mi (1,298.50 km) |
| Os to Comines | 661.00 mi (1,063.78 km) |
| Os to Compiegne | 754.31 mi (1,213.94 km) |
| Os to Concarneau | 932.49 mi (1,500.69 km) |
| Os to Conde-sur-l'Escaut | 679.55 mi (1,093.63 km) |
| Os to Conflans-Sainte-Honorine | 787.18 mi (1,266.85 km) |
| Os to Corbas | 1,006.19 mi (1,619.31 km) |
| Os to Corbeil-Essonnes | 811.14 mi (1,305.41 km) |
| Os to Cormeilles-en-Parisis | 788.23 mi (1,268.53 km) |
| Os to Cosne sur Loire | 891.46 mi (1,434.67 km) |
