| Niagara Falls to Chivasso | 4,088.22 mi (6,579.36 km) |
| Niagara Falls to Ciampino | 4,414.72 mi (7,104.80 km) |
| Niagara Falls to Cicciano | 4,529.59 mi (7,289.67 km) |
| Niagara Falls to Cingoli | 4,377.49 mi (7,044.90 km) |
| Niagara Falls to Cinisello Balsamo | 4,129.70 mi (6,646.11 km) |
| Niagara Falls to Cinisi | 4,585.06 mi (7,378.94 km) |
| Niagara Falls to Cirie | 4,074.74 mi (6,557.66 km) |
| Niagara Falls to Ciro Marina | 4,705.45 mi (7,572.69 km) |
| Niagara Falls to Cislago | 4,115.79 mi (6,623.73 km) |
| Niagara Falls to Cisterna di Latina | 4,432.72 mi (7,133.77 km) |
| Niagara Falls to Cisternino | 4,659.64 mi (7,498.96 km) |
| Niagara Falls to Citta di Castello | 4,333.78 mi (6,974.55 km) |
| Niagara Falls to Citta Sant'Angelo | 4,445.97 mi (7,155.10 km) |
| Niagara Falls to Cittadella | 4,230.04 mi (6,807.59 km) |
| Niagara Falls to Cittanova | 4,705.22 mi (7,572.33 km) |
