| Niagara Falls to Coswig | 4,025.22 mi (6,477.96 km) |
| Niagara Falls to Cottbus | 4,098.89 mi (6,596.53 km) |
| Niagara Falls to Crailsheim | 4,033.70 mi (6,491.61 km) |
| Niagara Falls to Cremlingen | 3,947.21 mi (6,352.42 km) |
| Niagara Falls to Crimmitschau | 4,061.57 mi (6,536.47 km) |
| Niagara Falls to Cuxhaven | 3,822.50 mi (6,151.72 km) |
| Niagara Falls to Dachau | 4,118.30 mi (6,627.77 km) |
| Niagara Falls to Dallgow-Doberitz | 4,024.59 mi (6,476.96 km) |
| Niagara Falls to Damme | 3,847.42 mi (6,191.82 km) |
| Niagara Falls to Darmstadt | 3,953.05 mi (6,361.82 km) |
| Niagara Falls to Dassel | 3,926.66 mi (6,319.35 km) |
| Niagara Falls to Datteln | 3,843.40 mi (6,185.36 km) |
| Niagara Falls to Dautphe | 3,915.58 mi (6,301.52 km) |
| Niagara Falls to Deggendorf | 4,156.24 mi (6,688.82 km) |
| Niagara Falls to Delbruck | 3,885.87 mi (6,253.70 km) |
