| Kastamonu to Dendermonde | 1,554.03 mi (2,500.97 km) |
| Kastamonu to Dessel | 1,514.87 mi (2,437.94 km) |
| Kastamonu to Destelbergen | 1,566.97 mi (2,521.79 km) |
| Kastamonu to Deurne | 1,542.05 mi (2,481.68 km) |
| Kastamonu to Diepenbeek | 1,496.34 mi (2,408.13 km) |
| Kastamonu to Diest | 1,513.12 mi (2,435.13 km) |
| Kastamonu to Diksmuide | 1,606.22 mi (2,584.97 km) |
| Kastamonu to Dilbeek | 1,544.42 mi (2,485.51 km) |
| Kastamonu to Dinant | 1,506.99 mi (2,425.27 km) |
| Kastamonu to Dison | 1,472.91 mi (2,370.42 km) |
| Kastamonu to Dour | 1,557.87 mi (2,507.15 km) |
| Kastamonu to Drongen | 1,572.60 mi (2,530.86 km) |
| Kastamonu to Duffel | 1,537.61 mi (2,474.54 km) |
| Kastamonu to Durbuy | 1,485.18 mi (2,390.16 km) |
| Kastamonu to Ecaussinnes-Lalaing | 1,543.08 mi (2,483.35 km) |
