| Harrow to Dabrowa Gornicza | 852.11 mi (1,371.34 km) |
| Harrow to Dabrowa Tarnowska | 931.73 mi (1,499.47 km) |
| Harrow to Darlowo | 721.80 mi (1,161.63 km) |
| Harrow to Debica | 952.34 mi (1,532.64 km) |
| Harrow to Deblin | 949.94 mi (1,528.78 km) |
| Harrow to Debno | 641.51 mi (1,032.40 km) |
| Harrow to Dobre Miasto | 879.19 mi (1,414.92 km) |
| Harrow to Drawsko Pomorskie | 689.90 mi (1,110.28 km) |
| Harrow to Drezdenko | 688.97 mi (1,108.79 km) |
| Harrow to Dzialdowo | 869.71 mi (1,399.66 km) |
| Harrow to Dzierzoniow | 737.29 mi (1,186.55 km) |
| Harrow to Elblag | 839.61 mi (1,351.22 km) |
| Harrow to Elk | 958.97 mi (1,543.31 km) |
| Harrow to Garwolin | 937.03 mi (1,508.01 km) |
| Harrow to Gdansk | 810.36 mi (1,304.15 km) |
