| Sonderborg to Devnya | 1,134.21 mi (1,825.33 km) |
| Sonderborg to Dimitrovgrad | 1,140.88 mi (1,836.06 km) |
| Sonderborg to Dobrich | 1,123.81 mi (1,808.59 km) |
| Sonderborg to Dospat | 1,125.20 mi (1,810.83 km) |
| Sonderborg to Dupnitsa | 1,061.34 mi (1,708.05 km) |
| Sonderborg to Elhovo | 1,162.07 mi (1,870.17 km) |
| Sonderborg to Etropole | 1,051.06 mi (1,691.51 km) |
| Sonderborg to Gabrovo | 1,086.50 mi (1,748.55 km) |
| Sonderborg to Gorna Oryahovitsa | 1,082.11 mi (1,741.49 km) |
| Sonderborg to Gotse Delchev | 1,118.92 mi (1,800.72 km) |
| Sonderborg to Harmanli | 1,156.11 mi (1,860.58 km) |
| Sonderborg to Haskovo | 1,146.68 mi (1,845.40 km) |
| Sonderborg to Ihtiman | 1,069.31 mi (1,720.89 km) |
| Sonderborg to Isperih | 1,084.29 mi (1,744.99 km) |
| Sonderborg to Kardzhali | 1,157.56 mi (1,862.91 km) |
