| Smiltene to Dendermonde | 979.28 mi (1,575.99 km) |
| Smiltene to Dessel | 935.31 mi (1,505.24 km) |
| Smiltene to Destelbergen | 989.27 mi (1,592.07 km) |
| Smiltene to Deurne | 958.81 mi (1,543.06 km) |
| Smiltene to Diepenbeek | 937.98 mi (1,509.53 km) |
| Smiltene to Diest | 947.64 mi (1,525.08 km) |
| Smiltene to Diksmuide | 1,023.23 mi (1,646.74 km) |
| Smiltene to Dilbeek | 982.02 mi (1,580.41 km) |
| Smiltene to Dinant | 982.34 mi (1,580.92 km) |
| Smiltene to Dison | 935.10 mi (1,504.90 km) |
| Smiltene to Dour | 1,016.46 mi (1,635.84 km) |
| Smiltene to Drongen | 994.01 mi (1,599.71 km) |
| Smiltene to Duffel | 961.85 mi (1,547.94 km) |
| Smiltene to Durbuy | 960.01 mi (1,544.98 km) |
| Smiltene to Ecaussinnes-Lalaing | 995.31 mi (1,601.79 km) |
