| Douai to Karlovo | 1,157.09 mi (1,862.16 km) |
| Douai to Karnobat | 1,248.91 mi (2,009.92 km) |
| Douai to Kavarna | 1,277.11 mi (2,055.31 km) |
| Douai to Kazanlak | 1,182.90 mi (1,903.69 km) |
| Douai to Knezha | 1,093.70 mi (1,760.14 km) |
| Douai to Kostinbrod | 1,084.33 mi (1,745.05 km) |
| Douai to Kozloduy | 1,068.39 mi (1,719.41 km) |
| Douai to Kyustendil | 1,084.61 mi (1,745.51 km) |
| Douai to Levski | 1,142.94 mi (1,839.38 km) |
| Douai to Lom | 1,045.98 mi (1,683.35 km) |
| Douai to Lovech | 1,134.19 mi (1,825.31 km) |
| Douai to Lukovit | 1,108.63 mi (1,784.16 km) |
| Douai to Lyaskovets | 1,177.60 mi (1,895.17 km) |
| Douai to Mezdra | 1,091.10 mi (1,755.95 km) |
| Douai to Momchilgrad | 1,227.62 mi (1,975.67 km) |
