| Pittsburgh to Dendermonde | 3,895.27 mi (6,268.83 km) |
| Pittsburgh to Dessel | 3,929.45 mi (6,323.84 km) |
| Pittsburgh to Destelbergen | 3,882.93 mi (6,248.98 km) |
| Pittsburgh to Deurne | 3,904.03 mi (6,282.93 km) |
| Pittsburgh to Diepenbeek | 3,950.89 mi (6,358.34 km) |
| Pittsburgh to Diest | 3,934.19 mi (6,331.47 km) |
| Pittsburgh to Diksmuide | 3,846.41 mi (6,190.19 km) |
| Pittsburgh to Dilbeek | 3,906.98 mi (6,287.68 km) |
| Pittsburgh to Dinant | 3,950.13 mi (6,357.12 km) |
| Pittsburgh to Dison | 3,976.62 mi (6,399.76 km) |
| Pittsburgh to Dour | 3,900.93 mi (6,277.94 km) |
| Pittsburgh to Drongen | 3,877.66 mi (6,240.49 km) |
| Pittsburgh to Duffel | 3,909.78 mi (6,292.18 km) |
| Pittsburgh to Durbuy | 3,969.02 mi (6,387.53 km) |
| Pittsburgh to Ecaussinnes-Lalaing | 3,912.08 mi (6,295.89 km) |
