| Opoczno to Cognac | 1,017.23 mi (1,637.07 km) |
| Opoczno to Cogolin | 852.16 mi (1,371.41 km) |
| Opoczno to Colmar | 619.75 mi (997.39 km) |
| Opoczno to Colombes | 814.03 mi (1,310.05 km) |
| Opoczno to Colomiers | 1,030.03 mi (1,657.67 km) |
| Opoczno to Combs-la-Ville | 806.66 mi (1,298.19 km) |
| Opoczno to Comines | 749.67 mi (1,206.48 km) |
| Opoczno to Compiegne | 779.11 mi (1,253.86 km) |
| Opoczno to Concarneau | 1,104.62 mi (1,777.71 km) |
| Opoczno to Conde-sur-l'Escaut | 728.57 mi (1,172.52 km) |
| Opoczno to Conflans-Sainte-Honorine | 818.97 mi (1,318.01 km) |
| Opoczno to Corbas | 804.75 mi (1,295.13 km) |
| Opoczno to Corbeil-Essonnes | 811.34 mi (1,305.72 km) |
| Opoczno to Cormeilles-en-Parisis | 815.10 mi (1,311.77 km) |
| Opoczno to Cosne sur Loire | 825.10 mi (1,327.86 km) |
