| Niagara Falls to Casamassima | 4,629.14 mi (7,449.89 km) |
| Niagara Falls to Casandrino | 4,519.13 mi (7,272.83 km) |
| Niagara Falls to Casapulla | 4,515.01 mi (7,266.21 km) |
| Niagara Falls to Casarano | 4,720.67 mi (7,597.18 km) |
| Niagara Falls to Casatenovo | 4,128.10 mi (6,643.53 km) |
| Niagara Falls to Casciana Terme | 4,263.94 mi (6,862.15 km) |
| Niagara Falls to Cascina | 4,255.08 mi (6,847.90 km) |
| Niagara Falls to Caselle Torinese | 4,078.75 mi (6,564.12 km) |
| Niagara Falls to Caserta | 4,517.10 mi (7,269.57 km) |
| Niagara Falls to Casier | 4,250.79 mi (6,840.99 km) |
| Niagara Falls to Casorate Primo | 4,130.13 mi (6,646.81 km) |
| Niagara Falls to Casoria | 4,522.59 mi (7,278.41 km) |
| Niagara Falls to Cassano al Ionio | 4,653.82 mi (7,489.61 km) |
| Niagara Falls to Cassano d'Adda | 4,142.57 mi (6,666.82 km) |
| Niagara Falls to Cassano delle Murge | 4,625.79 mi (7,444.49 km) |
