| Niagara Falls to Castrovillari | 4,647.52 mi (7,479.46 km) |
| Niagara Falls to Catania | 4,699.15 mi (7,562.56 km) |
| Niagara Falls to Catanzaro | 4,703.48 mi (7,569.51 km) |
| Niagara Falls to Cattolica | 4,333.91 mi (6,974.76 km) |
| Niagara Falls to Cava de' Tirreni | 4,547.62 mi (7,318.69 km) |
| Niagara Falls to Cavallino | 4,709.07 mi (7,578.52 km) |
| Niagara Falls to Cavarzere | 4,261.78 mi (6,858.67 km) |
| Niagara Falls to Cave | 4,427.99 mi (7,126.15 km) |
| Niagara Falls to Cavriago | 4,215.48 mi (6,784.16 km) |
| Niagara Falls to Cavriglia | 4,300.20 mi (6,920.50 km) |
| Niagara Falls to Cazzago San Martino | 4,161.51 mi (6,697.31 km) |
| Niagara Falls to Ceccano | 4,454.83 mi (7,169.36 km) |
| Niagara Falls to Cecina | 4,267.84 mi (6,868.43 km) |
| Niagara Falls to Cefalu | 4,630.25 mi (7,451.67 km) |
| Niagara Falls to Ceglie Messapico | 4,665.94 mi (7,509.11 km) |
