| Niagara Falls to Dendermonde | 3,738.65 mi (6,016.77 km) |
| Niagara Falls to Dessel | 3,771.80 mi (6,070.13 km) |
| Niagara Falls to Destelbergen | 3,726.46 mi (5,997.16 km) |
| Niagara Falls to Deurne | 3,746.80 mi (6,029.89 km) |
| Niagara Falls to Diepenbeek | 3,793.70 mi (6,105.37 km) |
| Niagara Falls to Diest | 3,777.08 mi (6,078.62 km) |
| Niagara Falls to Diksmuide | 3,690.55 mi (5,939.36 km) |
| Niagara Falls to Dilbeek | 3,750.68 mi (6,036.13 km) |
| Niagara Falls to Dinant | 3,794.56 mi (6,106.76 km) |
| Niagara Falls to Dison | 3,819.75 mi (6,147.29 km) |
| Niagara Falls to Dour | 3,745.83 mi (6,028.33 km) |
| Niagara Falls to Drongen | 3,721.27 mi (5,988.81 km) |
| Niagara Falls to Duffel | 3,752.76 mi (6,039.49 km) |
| Niagara Falls to Durbuy | 3,812.93 mi (6,136.32 km) |
| Niagara Falls to Ecaussinnes-Lalaing | 3,756.37 mi (6,045.30 km) |
