| Douai to Devnya | 1,251.98 mi (2,014.86 km) |
| Douai to Dimitrovgrad | 1,213.86 mi (1,953.52 km) |
| Douai to Dobrich | 1,250.86 mi (2,013.07 km) |
| Douai to Dospat | 1,171.61 mi (1,885.53 km) |
| Douai to Dupnitsa | 1,103.02 mi (1,775.13 km) |
| Douai to Elhovo | 1,249.52 mi (2,010.92 km) |
| Douai to Etropole | 1,116.02 mi (1,796.06 km) |
| Douai to Gabrovo | 1,170.36 mi (1,883.52 km) |
| Douai to Gorna Oryahovitsa | 1,175.64 mi (1,892.01 km) |
| Douai to Gotse Delchev | 1,157.64 mi (1,863.05 km) |
| Douai to Harmanli | 1,231.07 mi (1,981.21 km) |
| Douai to Haskovo | 1,217.24 mi (1,958.95 km) |
| Douai to Ihtiman | 1,124.39 mi (1,809.54 km) |
| Douai to Isperih | 1,202.60 mi (1,935.40 km) |
| Douai to Kardzhali | 1,220.68 mi (1,964.50 km) |
