| Fort Collins to Dendermonde | 4,808.92 mi (7,739.21 km) |
| Fort Collins to Dessel | 4,833.59 mi (7,778.91 km) |
| Fort Collins to Destelbergen | 4,798.19 mi (7,721.93 km) |
| Fort Collins to Deurne | 4,812.42 mi (7,744.84 km) |
| Fort Collins to Diepenbeek | 4,858.19 mi (7,818.50 km) |
| Fort Collins to Diest | 4,842.62 mi (7,793.45 km) |
| Fort Collins to Diksmuide | 4,767.65 mi (7,672.80 km) |
| Fort Collins to Dilbeek | 4,822.82 mi (7,761.57 km) |
| Fort Collins to Dinant | 4,870.49 mi (7,838.30 km) |
| Fort Collins to Dison | 4,885.63 mi (7,862.66 km) |
| Fort Collins to Dour | 4,826.45 mi (7,767.42 km) |
| Fort Collins to Drongen | 4,793.74 mi (7,714.77 km) |
| Fort Collins to Duffel | 4,819.78 mi (7,756.69 km) |
| Fort Collins to Durbuy | 4,884.62 mi (7,861.04 km) |
| Fort Collins to Ecaussinnes-Lalaing | 4,832.48 mi (7,777.12 km) |
