| Portland to Dendermonde | 5,048.01 mi (8,123.98 km) |
| Portland to Dessel | 5,062.45 mi (8,147.23 km) |
| Portland to Destelbergen | 5,039.41 mi (8,110.15 km) |
| Portland to Deurne | 5,046.49 mi (8,121.54 km) |
| Portland to Diepenbeek | 5,088.39 mi (8,188.97 km) |
| Portland to Diest | 5,074.83 mi (8,167.15 km) |
| Portland to Diksmuide | 5,016.28 mi (8,072.92 km) |
| Portland to Dilbeek | 5,063.03 mi (8,148.17 km) |
| Portland to Dinant | 5,111.90 mi (8,226.81 km) |
| Portland to Dison | 5,115.67 mi (8,232.87 km) |
| Portland to Dour | 5,075.34 mi (8,167.97 km) |
| Portland to Drongen | 5,036.00 mi (8,104.65 km) |
| Portland to Duffel | 5,054.85 mi (8,135.00 km) |
| Portland to Durbuy | 5,120.77 mi (8,241.08 km) |
| Portland to Ecaussinnes-Lalaing | 5,076.27 mi (8,169.46 km) |
