| Effingham to Cognac | 4,288.80 mi (6,902.16 km) |
| Effingham to Cogolin | 4,665.46 mi (7,508.33 km) |
| Effingham to Colmar | 4,519.25 mi (7,273.03 km) |
| Effingham to Colombes | 4,288.19 mi (6,901.17 km) |
| Effingham to Colomiers | 4,430.95 mi (7,130.93 km) |
| Effingham to Combs-la-Ville | 4,308.90 mi (6,934.50 km) |
| Effingham to Comines | 4,257.45 mi (6,851.71 km) |
| Effingham to Compiegne | 4,294.55 mi (6,911.41 km) |
| Effingham to Concarneau | 4,069.04 mi (6,548.49 km) |
| Effingham to Conde-sur-l'Escaut | 4,290.19 mi (6,904.39 km) |
| Effingham to Conflans-Sainte-Honorine | 4,279.56 mi (6,887.29 km) |
| Effingham to Corbas | 4,508.29 mi (7,255.39 km) |
| Effingham to Corbeil-Essonnes | 4,307.65 mi (6,932.49 km) |
| Effingham to Cormeilles-en-Parisis | 4,284.50 mi (6,895.24 km) |
| Effingham to Cosne sur Loire | 4,366.17 mi (7,026.67 km) |
