| San Marino to Dendermonde | 5,587.73 mi (8,992.58 km) |
| San Marino to Dessel | 5,609.01 mi (9,026.83 km) |
| San Marino to Destelbergen | 5,577.66 mi (8,976.37 km) |
| San Marino to Deurne | 5,589.52 mi (8,995.46 km) |
| San Marino to Diepenbeek | 5,634.25 mi (9,067.45 km) |
| San Marino to Diest | 5,619.28 mi (9,043.36 km) |
| San Marino to Diksmuide | 5,549.43 mi (8,930.95 km) |
| San Marino to Dilbeek | 5,602.11 mi (9,015.72 km) |
| San Marino to Dinant | 5,650.51 mi (9,093.62 km) |
| San Marino to Dison | 5,661.82 mi (9,111.82 km) |
| San Marino to Dour | 5,608.71 mi (9,026.34 km) |
| San Marino to Drongen | 5,573.53 mi (8,969.73 km) |
| San Marino to Duffel | 5,597.28 mi (9,007.95 km) |
| San Marino to Durbuy | 5,662.93 mi (9,113.60 km) |
| San Marino to Ecaussinnes-Lalaing | 5,613.05 mi (9,033.34 km) |
