| Potomac to Dendermonde | 3,849.05 mi (6,194.45 km) |
| Potomac to Dessel | 3,884.81 mi (6,252.00 km) |
| Potomac to Destelbergen | 3,836.50 mi (6,174.26 km) |
| Potomac to Deurne | 3,858.77 mi (6,210.10 km) |
| Potomac to Diepenbeek | 3,905.45 mi (6,285.21 km) |
| Potomac to Diest | 3,888.67 mi (6,258.21 km) |
| Potomac to Diksmuide | 3,799.10 mi (6,114.07 km) |
| Potomac to Dilbeek | 3,860.23 mi (6,212.45 km) |
| Potomac to Dinant | 3,902.14 mi (6,279.88 km) |
| Potomac to Dison | 3,930.64 mi (6,325.75 km) |
| Potomac to Dour | 3,852.33 mi (6,199.72 km) |
| Potomac to Drongen | 3,831.11 mi (6,165.58 km) |
| Potomac to Duffel | 3,864.15 mi (6,218.75 km) |
| Potomac to Durbuy | 3,921.81 mi (6,311.55 km) |
| Potomac to Ecaussinnes-Lalaing | 3,864.40 mi (6,219.15 km) |
