| Northeim to Devnya | 1,004.44 mi (1,616.48 km) |
| Northeim to Dimitrovgrad | 990.18 mi (1,593.53 km) |
| Northeim to Dobrich | 998.59 mi (1,607.08 km) |
| Northeim to Dospat | 963.05 mi (1,549.87 km) |
| Northeim to Dupnitsa | 896.15 mi (1,442.22 km) |
| Northeim to Elhovo | 1,018.19 mi (1,638.62 km) |
| Northeim to Etropole | 895.31 mi (1,440.86 km) |
| Northeim to Gabrovo | 939.75 mi (1,512.38 km) |
| Northeim to Gorna Oryahovitsa | 939.75 mi (1,512.38 km) |
| Northeim to Gotse Delchev | 953.60 mi (1,534.66 km) |
| Northeim to Harmanli | 1,006.52 mi (1,619.83 km) |
| Northeim to Haskovo | 995.01 mi (1,601.31 km) |
| Northeim to Ihtiman | 909.73 mi (1,464.07 km) |
| Northeim to Isperih | 954.00 mi (1,535.31 km) |
| Northeim to Kardzhali | 1,002.86 mi (1,613.95 km) |
