| Niagara Falls to Caltagirone | 4,685.41 mi (7,540.44 km) |
| Niagara Falls to Caltanissetta | 4,655.18 mi (7,491.79 km) |
| Niagara Falls to Calvisano | 4,183.27 mi (6,732.32 km) |
| Niagara Falls to Calvizzano | 4,517.71 mi (7,270.55 km) |
| Niagara Falls to Camaiore | 4,235.12 mi (6,815.77 km) |
| Niagara Falls to Cameri | 4,108.33 mi (6,611.72 km) |
| Niagara Falls to Camisano Vicentino | 4,232.45 mi (6,811.47 km) |
| Niagara Falls to Campagna | 4,565.73 mi (7,347.83 km) |
| Niagara Falls to Campagnano di Roma | 4,392.28 mi (7,068.69 km) |
| Niagara Falls to Campi Bisenzio | 4,274.07 mi (6,878.46 km) |
| Niagara Falls to Campi Salentina | 4,697.94 mi (7,560.60 km) |
| Niagara Falls to Campiglia Marittima | 4,281.70 mi (6,890.73 km) |
| Niagara Falls to Campobasso | 4,510.35 mi (7,258.71 km) |
| Niagara Falls to Campobello di Licata | 4,659.04 mi (7,498.00 km) |
| Niagara Falls to Campobello di Mazara | 4,592.15 mi (7,390.36 km) |
