| Knoxville to Cognac | 4,222.22 mi (6,795.01 km) |
| Knoxville to Cogolin | 4,599.98 mi (7,402.95 km) |
| Knoxville to Colmar | 4,481.83 mi (7,212.81 km) |
| Knoxville to Colombes | 4,245.49 mi (6,832.45 km) |
| Knoxville to Colomiers | 4,355.93 mi (7,010.19 km) |
| Knoxville to Combs-la-Ville | 4,265.29 mi (6,864.32 km) |
| Knoxville to Comines | 4,227.01 mi (6,802.72 km) |
| Knoxville to Compiegne | 4,255.81 mi (6,849.06 km) |
| Knoxville to Concarneau | 4,008.86 mi (6,451.63 km) |
| Knoxville to Conde-sur-l'Escaut | 4,258.95 mi (6,854.12 km) |
| Knoxville to Conflans-Sainte-Honorine | 4,237.02 mi (6,818.82 km) |
| Knoxville to Corbas | 4,452.31 mi (7,165.30 km) |
| Knoxville to Corbeil-Essonnes | 4,263.56 mi (6,861.54 km) |
| Knoxville to Cormeilles-en-Parisis | 4,242.00 mi (6,826.84 km) |
| Knoxville to Cosne sur Loire | 4,315.96 mi (6,945.86 km) |
