| Delfzijl to Devnya | 1,172.04 mi (1,886.22 km) |
| Delfzijl to Dimitrovgrad | 1,160.97 mi (1,868.40 km) |
| Delfzijl to Dobrich | 1,165.22 mi (1,875.25 km) |
| Delfzijl to Dospat | 1,134.57 mi (1,825.91 km) |
| Delfzijl to Dupnitsa | 1,067.72 mi (1,718.33 km) |
| Delfzijl to Elhovo | 1,188.22 mi (1,912.25 km) |
| Delfzijl to Etropole | 1,066.45 mi (1,716.28 km) |
| Delfzijl to Gabrovo | 1,110.03 mi (1,786.43 km) |
| Delfzijl to Gorna Oryahovitsa | 1,109.43 mi (1,785.46 km) |
| Delfzijl to Gotse Delchev | 1,125.17 mi (1,810.78 km) |
| Delfzijl to Harmanli | 1,177.21 mi (1,894.54 km) |
| Delfzijl to Haskovo | 1,165.90 mi (1,876.33 km) |
| Delfzijl to Ihtiman | 1,081.13 mi (1,739.90 km) |
| Delfzijl to Isperih | 1,121.59 mi (1,805.02 km) |
| Delfzijl to Kardzhali | 1,174.02 mi (1,889.40 km) |
