| Niagara Falls to Cognac | 3,725.20 mi (5,995.13 km) |
| Niagara Falls to Cogolin | 4,102.32 mi (6,602.05 km) |
| Niagara Falls to Colmar | 3,963.78 mi (6,379.09 km) |
| Niagara Falls to Colombes | 3,730.71 mi (6,004.00 km) |
| Niagara Falls to Colomiers | 3,866.02 mi (6,221.76 km) |
| Niagara Falls to Combs-la-Ville | 3,751.15 mi (6,036.89 km) |
| Niagara Falls to Comines | 3,704.30 mi (5,961.49 km) |
| Niagara Falls to Compiegne | 3,738.40 mi (6,016.37 km) |
| Niagara Falls to Concarneau | 3,506.60 mi (5,643.33 km) |
| Niagara Falls to Conde-sur-l'Escaut | 3,736.76 mi (6,013.74 km) |
| Niagara Falls to Conflans-Sainte-Honorine | 3,722.13 mi (5,990.18 km) |
| Niagara Falls to Corbas | 3,947.19 mi (6,352.40 km) |
| Niagara Falls to Corbeil-Essonnes | 3,749.75 mi (6,034.64 km) |
| Niagara Falls to Cormeilles-en-Parisis | 3,727.09 mi (5,998.17 km) |
| Niagara Falls to Cosne sur Loire | 3,806.50 mi (6,125.96 km) |
