| Euclid to Cognac | 3,888.95 mi (6,258.66 km) |
| Euclid to Cogolin | 4,266.18 mi (6,865.76 km) |
| Euclid to Colmar | 4,128.45 mi (6,644.09 km) |
| Euclid to Colombes | 3,895.32 mi (6,268.91 km) |
| Euclid to Colomiers | 4,029.25 mi (6,484.46 km) |
| Euclid to Combs-la-Ville | 3,915.75 mi (6,301.78 km) |
| Euclid to Comines | 3,868.96 mi (6,226.49 km) |
| Euclid to Compiegne | 3,903.05 mi (6,281.36 km) |
| Euclid to Concarneau | 3,670.66 mi (5,907.35 km) |
| Euclid to Conde-sur-l'Escaut | 3,901.43 mi (6,278.74 km) |
| Euclid to Conflans-Sainte-Honorine | 3,886.74 mi (6,255.10 km) |
| Euclid to Corbas | 4,111.47 mi (6,616.77 km) |
| Euclid to Corbeil-Essonnes | 3,914.34 mi (6,299.52 km) |
| Euclid to Cormeilles-en-Parisis | 3,891.70 mi (6,263.08 km) |
| Euclid to Cosne sur Loire | 3,970.95 mi (6,390.63 km) |
