| Gahanna to Cognac | 4,008.25 mi (6,450.66 km) |
| Gahanna to Cogolin | 4,385.74 mi (7,058.16 km) |
| Gahanna to Colmar | 4,251.81 mi (6,842.62 km) |
| Gahanna to Colombes | 4,018.01 mi (6,466.36 km) |
| Gahanna to Colomiers | 4,147.21 mi (6,674.30 km) |
| Gahanna to Combs-la-Ville | 4,038.32 mi (6,499.05 km) |
| Gahanna to Comines | 3,993.10 mi (6,426.28 km) |
| Gahanna to Compiegne | 4,026.23 mi (6,479.59 km) |
| Gahanna to Concarneau | 3,790.89 mi (6,100.85 km) |
| Gahanna to Conde-sur-l'Escaut | 4,025.48 mi (6,478.39 km) |
| Gahanna to Conflans-Sainte-Honorine | 4,009.44 mi (6,452.58 km) |
| Gahanna to Corbas | 4,232.40 mi (6,811.39 km) |
| Gahanna to Corbeil-Essonnes | 4,036.85 mi (6,496.69 km) |
| Gahanna to Cormeilles-en-Parisis | 4,014.41 mi (6,460.57 km) |
| Gahanna to Cosne sur Loire | 4,092.66 mi (6,586.51 km) |
