| Irmo to Cognac | 4,177.33 mi (6,722.76 km) |
| Irmo to Cogolin | 4,554.20 mi (7,329.28 km) |
| Irmo to Colmar | 4,453.60 mi (7,167.38 km) |
| Irmo to Colombes | 4,215.04 mi (6,783.45 km) |
| Irmo to Colomiers | 4,305.33 mi (6,928.75 km) |
| Irmo to Combs-la-Ville | 4,234.20 mi (6,814.29 km) |
| Irmo to Comines | 4,204.12 mi (6,765.87 km) |
| Irmo to Compiegne | 4,227.73 mi (6,803.87 km) |
| Irmo to Concarneau | 3,968.81 mi (6,387.19 km) |
| Irmo to Conde-sur-l'Escaut | 4,235.43 mi (6,816.27 km) |
| Irmo to Conflans-Sainte-Honorine | 4,206.70 mi (6,770.04 km) |
| Irmo to Corbas | 4,412.91 mi (7,101.89 km) |
| Irmo to Corbeil-Essonnes | 4,232.20 mi (6,811.07 km) |
| Irmo to Cormeilles-en-Parisis | 4,211.69 mi (6,778.07 km) |
| Irmo to Cosne sur Loire | 4,280.64 mi (6,889.02 km) |
