| Idaho Falls to Cognac | 4,991.14 mi (8,032.47 km) |
| Idaho Falls to Cogolin | 5,344.85 mi (8,601.70 km) |
| Idaho Falls to Colmar | 5,118.83 mi (8,237.96 km) |
| Idaho Falls to Colombes | 4,917.66 mi (7,914.20 km) |
| Idaho Falls to Colomiers | 5,151.21 mi (8,290.08 km) |
| Idaho Falls to Combs-la-Ville | 4,939.98 mi (7,950.14 km) |
| Idaho Falls to Comines | 4,850.34 mi (7,805.87 km) |
| Idaho Falls to Compiegne | 4,911.31 mi (7,903.99 km) |
| Idaho Falls to Concarneau | 4,764.36 mi (7,667.50 km) |
| Idaho Falls to Conde-sur-l'Escaut | 4,883.60 mi (7,859.40 km) |
| Idaho Falls to Conflans-Sainte-Honorine | 4,909.04 mi (7,900.34 km) |
| Idaho Falls to Corbas | 5,166.59 mi (8,314.82 km) |
| Idaho Falls to Corbeil-Essonnes | 4,940.29 mi (7,950.63 km) |
| Idaho Falls to Cormeilles-en-Parisis | 4,913.56 mi (7,907.61 km) |
| Idaho Falls to Cosne sur Loire | 5,014.45 mi (8,069.98 km) |
