| Iona to Cognac | 4,543.99 mi (7,312.84 km) |
| Iona to Cogolin | 4,916.01 mi (7,911.56 km) |
| Iona to Colmar | 4,847.81 mi (7,801.80 km) |
| Iona to Colombes | 4,607.26 mi (7,414.67 km) |
| Iona to Colomiers | 4,659.96 mi (7,499.49 km) |
| Iona to Combs-la-Ville | 4,625.18 mi (7,443.51 km) |
| Iona to Comines | 4,609.03 mi (7,417.52 km) |
| Iona to Compiegne | 4,623.87 mi (7,441.40 km) |
| Iona to Concarneau | 4,346.22 mi (6,994.56 km) |
| Iona to Conde-sur-l'Escaut | 4,639.10 mi (7,465.91 km) |
| Iona to Conflans-Sainte-Honorine | 4,599.22 mi (7,401.73 km) |
| Iona to Corbas | 4,787.74 mi (7,705.12 km) |
| Iona to Corbeil-Essonnes | 4,622.70 mi (7,439.52 km) |
| Iona to Cormeilles-en-Parisis | 4,604.18 mi (7,409.71 km) |
| Iona to Cosne sur Loire | 4,663.85 mi (7,505.75 km) |
