| Harstad to Devnya | 1,811.77 mi (2,915.76 km) |
| Harstad to Dimitrovgrad | 1,877.54 mi (3,021.62 km) |
| Harstad to Dobrich | 1,790.02 mi (2,880.77 km) |
| Harstad to Dospat | 1,896.57 mi (3,052.23 km) |
| Harstad to Dupnitsa | 1,849.00 mi (2,975.68 km) |
| Harstad to Elhovo | 1,876.06 mi (3,019.22 km) |
| Harstad to Etropole | 1,814.37 mi (2,919.94 km) |
| Harstad to Gabrovo | 1,819.86 mi (2,928.79 km) |
| Harstad to Gorna Oryahovitsa | 1,803.96 mi (2,903.19 km) |
| Harstad to Gotse Delchev | 1,900.03 mi (3,057.81 km) |
| Harstad to Harmanli | 1,887.49 mi (3,037.62 km) |
| Harstad to Haskovo | 1,885.33 mi (3,034.15 km) |
| Harstad to Ihtiman | 1,840.60 mi (2,962.16 km) |
| Harstad to Isperih | 1,772.00 mi (2,851.76 km) |
| Harstad to Kardzhali | 1,903.51 mi (3,063.40 km) |
